Laser Crystals

Laser crystals are the working substance of the crystal laser, which can transform the energy provided by the outside into the coherent laser with high parallelism and monochromaticity in space and time through the optical resonator. They are composed of active ions and matrix crystals, doped with different active ions and widely used in industrial, medical, military and scientific research fields in different wavelength bands. The most widely used laser crystals include Ti:Al2O3, Yb:YAG, Nd:YAG, Er:YAG, Ho:YAG, etc.

Ti:Al2O3

Titanium-doped sapphire (Ti3+:Al2O3) crystal is the most widely used tunable laser solid material, with excellent laser characteristics...

Yb:YAG

Ytterbium doped YAG (Yb:YAG) crystal is a promising laser material. The crystal is more suitable for diode pumped laser system than other traditional neodymium doped YAG.

Nd:YAG

Nd: YAG single crystal is the most important laser crystal, which is widely used in industrial, medical and scientific fields.

Er:YAG

Er3+:YAG crystal is an attractive laser material for eye-safe emission at wavelengths of 1617 and 1645 nm which can be resonantly diode-pumped into the upper laser manifold at 1470 nm and 1532 nm.

Ho:YAG

Ho: YAG single crystal is one of the earliest 2um laser crystals studied. Its output wavelength is near 2.1um and is in the atmospheric window.

RE:LiYF4

Rare-earth-doped lithium yttrium fluoride (RE: LiYF4) is a type of laser crystal that has unique properties such as a high laser damage threshold, large emission cross-section, and broad tunability range. It has been extensively studied and optimized for laser applications in different fields.

RE: LiLuF4

Rare-earth-doped lithium lutetium fluoride crystal (RE: LiLuF4) is a type of crystal that contains rare earth elements, such as erbium, thulium, or holmium, which are added to a matrix of lithium and lutetium fluoride. It is known for its excellent optical and spectroscopic properties, making it an attractive material for various applications.

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array(7) { [0] => array(28) { ["id"] => string(1) "1" ["lang"] => string(2) "en" ["title"] => string(8) "Ti:Al2O3" ["brief"] => string(138) "Titanium-doped sapphire (Ti3+:Al2O3) crystal is the most widely used tunable laser solid material, with excellent laser characteristics..." ["application"] => string(102) "Protontherapy Accelerator Physics Nuclear Physics Infrared Spectroscopy “Cold” Micromachining" ["content"] => string(16328) "Titanium-doped sapphire (Ti3+:Al2O3) crystal is the most widely used tunable laser solid material, with excellent laser characteristics –the wide emission bandwidth (spanning 0.65 ~ 1.2μm) ， excellent thermal, optical, physical, chemical and mechanical properties. Ti:Sapphire lasers and based on them laser systems are unsurpassed in its extraordinary breadth of performance and resulting diversity of applications, such as proton therapy, accelerator physics, nuclear physics, infrared spectroscopy, and materials characterization.  CCT produces high quality titanium doped sapphire laser crystals by using superior material quality and then applying precision optical manufacturing techniques. The size can be ϕ160mm according to customer requirements. <table cellspacing="0"><tbody><tr class="firstRow"><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top-width: 1px; border-top-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Crystal Structure</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top-width: 1px; border-top-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Hexagonal</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Lattice Constant</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">a = 4.758 Å, c = 12.991 Å</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Thermal Conductivity</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">>20 (W/mK)</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Mohs Hardness</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">9 (mohs)</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Density</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">3.98 (g/cm3)</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Concentration</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">0.05-0.5 wt%</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Absorption Band / Peak</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">400-600 nm / 490nm</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Absorption Coefficient</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">0.5-5 cm-1 at 490nm</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">FOM Value </td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">100~300</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Tuned Range / Emission Peak</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">660-1050nm / 760nm</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Refractive Index</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">1.76 @ 800 nm</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Decay Lifetime</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">3.2μs (T = 300 K)</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Diameter</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">3~220mm</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Thickness</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">1~80mm</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Cutting</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Flat, Brewster ends or custom specified</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Orientation</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">c axis [0001] or custom specified</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Flatness</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">0.1-0.2 λ @633nm</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">Parallelism</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">15 arcsec</td></tr><tr><td width="171" valign="center" style="padding: 0px 7px; border-left: none; border-right-width: 1px; border-right-color: rgb(0, 0, 0); border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">S/D</td><td width="190" valign="center" style="padding: 0px 7px; border-left: none; border-right: none; border-top: none; border-bottom-width: 1px; border-bottom-color: rgb(0, 0, 0);">20/10 scratch/dig</td></tr></tbody></table> " ["content2"] => string(52) "3~220mm" ["content_detail"] => string(1330) "Titanium-doped sapphire (Ti3+:Al2O3) crystal is the most widely used tunable laser solid material, with excellent laser characteristics –the wide emission bandwidth (spanning 0.65 ~ 1.2μm) ， excellent thermal, optical, physical, chemical and mechanical properties. Ti:Sapphire lasers and based on them laser systems are unsurpassed in its extraordinary breadth of performance and resulting diversity of applications, such as proton therapy, accelerator physics, nuclear physics, infrared spectroscopy, and materials characterization.  CCT produces high quality titanium doped sapphire laser crystals by using superior material quality and then applying precision optical manufacturing techniques. The size can be ϕ160mm according to customer requirements.CasCrysTech (CCT) provides high quality Titanium-doped sapphire (Ti3+:Al2O3) crystals upon request from customers." ["cate_id"] => string(1) "6" ["cateid_extend"] => NULL ["brand_id"] => NULL ["pic_id"] => string(2) "33" ["banner_id"] => string(0) "" ["file_id"] => NULL ["doc_id"] => string(2) "34" ["is_hot"] => string(1) "0" ["is_jp"] => string(1) "0" ["is_rec"] => string(1) "1" ["tag"] => NULL ["sort"] => string(4) "1101" ["create_time"] => string(10) "1665559120" ["update_time"] => string(10) "1665559120" ["status"] => string(1) "1" ["meta_title"] => string(43) "Ti:Sapphlre(Ti doped sapphire) lase crystal" ["meta_key"] => string(140) "Ti:Sapphire, laser crystal, Ti doped sapphire, Ti:Al2O3,d tunable laser, high fom, hem sapphire, high concentration, wide emission bandwidth" ["meta_desc"] => string(256) "Titanium-doped sapphire is a tunable laser crystal with excellent thermal, optical, physical, chemical and mechanical properties. Can be used in proton therapy, accelerator physics, nuclear physics, and infrared spectroscopy. The large size can be ϕ160mm." ["model"] => string(0) "" ["feature"] => string(97) "High FOM Large Size and Highly Doped High Damage Threshold Customized Brewster's Angle & Plano" } [1] => array(28) { ["id"] => string(2) "30" ["lang"] => string(2) "en" ["title"] => string(6) "Yb:YAG" ["brief"] => string(171) "Ytterbium doped YAG (Yb:YAG) crystal is a promising laser material. The crystal is more suitable for diode pumped laser system than other traditional neodymium doped YAG." ["application"] => string(170) "Ytterbium doped YAG (Yb:YAG) crystal is a promising laser material. The crystal is more suitable for diode pumped laser system than other traditional neodymium doped YAG." ["content"] => string(8750) "<table cellspacing="0"><tbody><tr class="firstRow"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Crystal Structure</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">Cubic</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Lattice Constant</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">12.01 Å</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Density </td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">4.56±0.04 (g/cm3)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Melt Point</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">1970℃</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Mohs Hardness</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0); word-break: break-all;">8.5（mohs）</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Specific Heat Capacity</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">(0-20℃)   0.59 J/g.cm3</td></tr><tr style="height:20px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Elastic modulus</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">310 GPa</td></tr><tr style="height:9px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Young's modulus </td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">3.17X104Kg/mm2</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Poisson's ratio</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">0.3 (est.)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Tensile strength</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">0.13~0.26 GPa</td></tr><tr style="height:5px"><td valign="center" rowspan="3" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Thermal Expansion</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);"><100>(0~250°C )</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">Direction: 8.2x10-6 /°C</td></tr><tr style="height:5px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);"><110>(0~250°C )</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">7.7x10-6/°C </td></tr><tr style="height:5px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);"><111>(0~250°C )</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">7.7x10-6/°C </td></tr></tbody></table>" ["content2"] => string(68) "Customize upon request." ["content_detail"] => string(868) "Ytterbium doped YAG (Yb:YAG) crystal is a promising laser material. The crystal is more suitable for diode pumped laser system than other traditional neodymium doped YAG. Compared with Nd doped YAG crystal, ytterbium doped YAG has much wider absorption bandwidth, which reduces the thermal control requirements in the design of diode laser. It has a long lifetime of high laser energy level, and the heat load per unit pump power is 3-4 times lower. Ytterbium doped YAG crystal is expected to replace neodymium doped YAG crystal for high-power diode lasers and other related applications.CasCrysTech (CCT) provides high quality Ytterbium doped YAG (Yb:YAG) crystals upon request from customers." ["cate_id"] => string(1) "6" ["cateid_extend"] => NULL ["brand_id"] => NULL ["pic_id"] => string(3) "116" ["banner_id"] => string(0) "" ["file_id"] => NULL ["doc_id"] => string(0) "" ["is_hot"] => string(1) "0" ["is_jp"] => string(1) "0" ["is_rec"] => string(1) "0" ["tag"] => NULL ["sort"] => string(4) "1102" ["create_time"] => string(10) "1665559167" ["update_time"] => string(10) "1665559167" ["status"] => string(1) "1" ["meta_title"] => string(36) "Ytterbium doped YAG (Yb:YAG) crystal" ["meta_key"] => string(78) "Ytterbium doped YAG,Yb:YAG, diode pumped laser system,photo optic applications" ["meta_desc"] => string(170) "Ytterbium doped YAG (Yb:YAG) crystal is a promising laser material. The crystal is more suitable for diode pumped laser system than other traditional neodymium doped YAG" ["model"] => string(0) "" ["feature"] => string(278) "Compared with Nd doped YAG crystal, ytterbium doped YAG has much wider absorption bandwidth, which reduces the thermal control requirements in the design of diode laser. It has a long lifetime of high laser energy level, and the heat load per unit pump power is 3-4 times lower." } [2] => array(28) { ["id"] => string(2) "31" ["lang"] => string(2) "en" ["title"] => string(6) "Nd:YAG" ["brief"] => string(126) "Nd: YAG single crystal is the most important laser crystal, which is widely used in industrial, medical and scientific fields." ["application"] => string(370) "Nd: YAG single crystal is the most important laser crystal, which is widely used in industrial, medical and scientific fields. It is the most suitable and commercial laser crystal for continuous, pulse and mode-locked laser. It is also widely used in various solid-state laser systems: frequency doubling continuous wave, high-energy Q-switch, inverted cavity and so on." ["content"] => string(7839) "<table cellspacing="0"><tbody><tr class="firstRow"><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext; word-break: break-all;" width="262" valign="top">Dimensional tolerance</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: windowtext; border-bottom-color: windowtext;" width="306" valign="top">Diameter: < + / - 0.025 mm, length: < + / - 0.5 mm</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="top">Flatness</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">λ/ 8 @633nm</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext; word-break: break-all;" width="262" valign="top">Surface finish</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">10/5</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="top">Parallelism of luminous surface</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">Better than 20 arc sec</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="top">Verticality</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">Better than 5 arc min</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="top">Orientation</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">< 111 > crystal direction, tolerance: < ± 0.5 °</td></tr><tr style="height:20px"><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext; word-break: break-all;" width="262" valign="top">Chamfering</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">< 0.1 mm @ 45deg.</td></tr><tr style="height:9px"><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="top">Coating</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">AR coating, HR Coating</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="top">Residual reflections</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">R<0.2%@1064HR:R>99.8%@1064,R<5%@808nm</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="top">Luminous aperture</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">> 95% central area</td></tr><tr style="height:27px"><td style="padding: 0px 7px; border-width: 1px; border-left-color: windowtext; border-right-color: windowtext; border-style: solid; border-top-color: initial; border-bottom-color: windowtext;" width="262" valign="center">Wavefront distortion</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: initial; border-bottom-color: windowtext;" width="306" valign="top">< 7mm diameter : < λ/ 8 per inch @ 633nm7mm diameter : < λ/ 10per inch @ 633nm</td></tr></tbody></table> " ["content2"] => string(68) "Customize upon request." ["content_detail"] => string(1070) "Nd: YAG single crystal is the most important laser crystal, which is widely used in industrial, medical and scientific fields. The main advantages are: low output threshold, high gain, high efficiency and low 1064 nm loss; At the same time, it also has the characteristics of high optical quality, good thermal conductivity, thermal shock resistance and high mechanical strength, which makes Nd: YAG the most suitable and commercial laser crystal for continuous, pulse and mode-locked laser. Nd: YAG crystal is also widely used in various solid-state laser systems: frequency doubling continuous wave, high-energy Q-switch, inverted cavity and so on.CasCrysTech (CCT) provides high quality Neodymium-doped YAG (Nd: YAG) crystals upon request from customers. " ["cate_id"] => string(1) "6" ["cateid_extend"] => NULL ["brand_id"] => NULL ["pic_id"] => string(3) "118" ["banner_id"] => string(0) "" ["file_id"] => NULL ["doc_id"] => string(0) "" ["is_hot"] => string(1) "0" ["is_jp"] => string(1) "0" ["is_rec"] => string(1) "0" ["tag"] => NULL ["sort"] => string(4) "1103" ["create_time"] => string(10) "1665559346" ["update_time"] => string(10) "1665559346" ["status"] => string(1) "1" ["meta_title"] => string(62) "Neodimium doped yttrium aluminum garnet(Nd:YAG) single crystal" ["meta_key"] => string(100) "Neodimium doped yttrium aluminum garnet, laser crystala,low 1064 nm loss,pulse and mode-locked laser" ["meta_desc"] => string(255) "Nd: YAG single crystal is the most important laser crystal, which is widely used in industrial, medical and scientific fields. The main advantages are: low output threshold, high gain, high efficiency and low 1064 nm loss; At the same time, it also has th" ["model"] => string(0) "" ["feature"] => string(176) "Low output threshold, high gain, high efficiency and low 1064 nm loss; High optical quality. Good thermal conductivity. Thermal shock resistance. High mechanical strength." } [3] => array(28) { ["id"] => string(2) "32" ["lang"] => string(2) "en" ["title"] => string(6) "Er:YAG" ["brief"] => string(199) "Er3+:YAG crystal is an attractive laser material for eye-safe emission at wavelengths of 1617 and 1645 nm which can be resonantly diode-pumped into the upper laser manifold at 1470 nm and 1532 nm." ["application"] => string(413) "CW and Q-switched eye-safe (~1,6 μm) in-band pumped lasers with nearly quantum defect limited efficiency for military applications including LIDAR, telemetry, or active imaging. Channel waveguide eye-safe (~1,6 µm) in-band pumped lasers with diffraction-limited output for long-distance telemetry and ranging. CW and Q-switched ~3 µm lasers for oral surgery, dentistry, implant dentistry, and otolaryngology." ["content"] => string(8940) "<table cellspacing="0"><tbody><tr class="firstRow"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Crystal Structure</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">Cubic</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Lattice Constant</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">12.01 Å</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Density </td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">4.56±0.04 (g/cm3)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Melt Point</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">1970℃</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Mohs Hardness</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">8.5（mohs）</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Specific Heat Capacity</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">(0-20℃)   0.59 J/g.cm3</td></tr><tr style="height:20px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Elastic modulus</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">310 GPa</td></tr><tr style="height:9px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Young's modulus </td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">3.17X104Kg/mm2</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Poisson's ratio</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">0.3 (est.)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Tensile strength</td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">0.13~0.26 GPa</td></tr><tr style="height:5px"><td valign="center" rowspan="3" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;">Thermal Expansion</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);"><100>(0~250°C )</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">Direction: 8.2x10-6 /°C</td></tr><tr style="height:5px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);"><110>(0~250°C )</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">7.7x10-6/°C </td></tr><tr style="height:5px"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);"><111>(0~250°C )</td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);">7.7x10-6/°C </td></tr></tbody></table> " ["content2"] => string(68) "Customize upon request." ["content_detail"] => string(1213) "Er3+:YAG crystal is an attractive laser material for eye-safe emission at wavelengths of 1617 and 1645 nm which can be resonantly diode-pumped into the upper laser manifold at 1470 nm and 1532 nm. Due to the low quantum defect, high slope efficiencies of >80% can be achieved with direct fiber laser or InGaAs/InP pumping. By using heavily erbium-doped (~50 at.%) YAG crystal efficient CW laser operation at ~3 µm can be obtained.CasCrysTech (CCT) provides high quality Erbium -doped YAG (Er：YAG) crystals upon request from customers." ["cate_id"] => string(1) "6" ["cateid_extend"] => NULL ["brand_id"] => NULL ["pic_id"] => string(3) "120" ["banner_id"] => string(0) "" ["file_id"] => NULL ["doc_id"] => string(0) "" ["is_hot"] => string(1) "0" ["is_jp"] => string(1) "0" ["is_rec"] => string(1) "0" ["tag"] => NULL ["sort"] => string(4) "1104" ["create_time"] => string(10) "1665559591" ["update_time"] => string(10) "1665559591" ["status"] => string(1) "1" ["meta_title"] => string(32) "Er3+-doped YAG(Er3+:YAG) crystal" ["meta_key"] => string(43) "Er3+:YAG,laser crystal,Q-switched, eye-safe" ["meta_desc"] => string(199) "Er3+:YAG crystal is an attractive laser material for eye-safe emission at wavelengths of 1617 and 1645 nm which can be resonantly diode-pumped into the upper laser manifold at 1470 nm and 1532 nm." ["model"] => string(0) "" ["feature"] => string(269) "Isotropic crystal (cubic symmetry). High thermal conductivity. Strong absorption bandwidth near 1470 nm corresponding to InGaAsP/InP laser diode emission. Emission spectra at 1617 nm is free from absorption in the atmosphere. Custom crystals available upon request." } [4] => array(28) { ["id"] => string(2) "33" ["lang"] => string(2) "en" ["title"] => string(6) "Ho:YAG" ["brief"] => string(143) "Ho: YAG single crystal is one of the earliest 2um laser crystals studied. Its output wavelength is near 2.1um and is in the atmospheric window." ["application"] => string(232) "Ho: YAG provides a powerful tool for remote sensing detection and photoelectric countermeasure. At the same time, it is also an ideal light source for coherent Doppler wind radar, differential absorption radar and laser rangefinder." ["content"] => string(8772) "<table cellspacing="0"><tbody><tr class="firstRow"><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Crystal Structure</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">Cubic</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Lattice Constant</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">12.01 Å</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Density </td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">4.56±0.04 (g/cm3)</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Melt Point</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">1970℃</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Mohs Hardness</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">8.5（mohs）</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Specific Heat Capacity</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">(0-20℃)   0.59 J/g.cm3</td></tr><tr style="height:20px"><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Elastic modulus</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">310 GPa</td></tr><tr style="height:9px"><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Young's modulus </td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">3.17X104Kg/mm2</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Poisson's ratio</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">0.3 (est.)</td></tr><tr><td style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="top">Tensile strength</td><td colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">0.13~0.26 GPa</td></tr><tr style="height:5px"><td rowspan="3" style="padding: 0px 7px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;" valign="center">Thermal Expansion</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0); word-break: break-all;" valign="top"><100>(0~250°C )</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">Direction: 8.2x10-6 /°C</td></tr><tr style="height:5px"><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top"><110>(0~250°C )</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">7.7x10-6/°C </td></tr><tr style="height:5px"><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top"><111>(0~250°C )</td><td style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);" valign="top">7.7x10-6/°C </td></tr></tbody></table> " ["content2"] => string(68) "Customize upon request." ["content_detail"] => string(2139) "Ho: YAG single crystal is one of the earliest 2um laser crystals studied. Its output wavelength is near 2.1um and is in the atmospheric window. It provides a powerful tool for remote sensing detection and photoelectric countermeasure. At the same time, it is also an ideal light source for coherent Doppler wind radar, differential absorption radar and laser rangefinder. The output wavelength of Ho and TM laser is about 2 microns, which is close to the absorption peak of water. It has excellent cutting and coagulation effect on human tissue. It can be transmitted by ordinary optical fiber. It is an ideal surgical laser light source. Human tissue pair 2 μ M laser has high absorptivity, which is almost three orders of magnitude higher than that of Nd: YAG.Therefore, when using Ho: YAG laser for medical surgery, it can not only improve the operation efficiency and accuracy, but also reduce the thermal damage area to a smaller size. The free beam generated by holmium crystal can eliminate fat without excessive heat, so as to reduce the thermal damage to healthy tissues. It is reported that holmium laser treatment of glaucoma in the United States can reduce the pain of surgery.More than 20 kinds of 2 micron lasers have been approved for clinical use in the United States. It can treat a variety of diseases. 2 micron laser is safe for human eyes and has good atmospheric penetration. It can be used as lidar light source. Its comprehensive performance is better than Nd: YAG and CO2 lasers.CasCrysTech (CCT) provides high quality Holmium-doped YAG (Ho:YAG) crystals upon request from customers. " ["cate_id"] => string(1) "6" ["cateid_extend"] => NULL ["brand_id"] => NULL ["pic_id"] => string(3) "184" ["banner_id"] => string(0) "" ["file_id"] => NULL ["doc_id"] => string(0) "" ["is_hot"] => string(1) "0" ["is_jp"] => string(1) "0" ["is_rec"] => string(1) "0" ["tag"] => NULL ["sort"] => string(4) "1105" ["create_time"] => string(10) "1665559692" ["update_time"] => string(10) "1665559692" ["status"] => string(1) "1" ["meta_title"] => string(40) "Ho-doped yttrium aluminum garnet(Ho:YAG)" ["meta_key"] => string(33) "Ho-doped,yttrium aluminum garnet," ["meta_desc"] => string(142) "Ho:YAG single crystal is one of the earliest 2um laser crystals studied. Its output wavelength is near 2.1um and is in the atmospheric window." ["model"] => string(0) "" ["feature"] => string(335) "Output wavelength close to the absorption peak of water. Excellent cutting and coagulation effect on human tissue. Can be transmitted by ordinary optical fiber. It is an ideal surgical laser light source. Human tissue pair 2 μ M laser has high absorptivity, which is almost three orders of magnitude higher than that of Nd: YAG." } [5] => array(28) { ["id"] => string(3) "162" ["lang"] => string(2) "en" ["title"] => string(8) "RE:LiYF4" ["brief"] => string(294) "Rare-earth-doped lithium yttrium fluoride (RE: LiYF4) is a type of laser crystal that has unique properties such as a high laser damage threshold, large emission cross-section, and broad tunability range. It has been extensively studied and optimized for laser applications in different fields." ["application"] => string(377) "RE: LiYF4 crystal is used in various laser applications such as medical laser systems, spectroscopy, and scientific research. It is also used as a gain medium in tunable solid-state lasers and as a frequency-doubling crystal in high-power laser systems. RE: LiYF4 crystal doped with cerium (Ce3+) is used as a scintillation material for radiation detection and medical imaging." ["content"] => string(5398) "<table width="944"><tbody><tr class="firstRow"><td valign="top" colspan="1" rowspan="1" style="border-color: rgb(0, 0, 0);" width="404">Name </td><td valign="top" colspan="1" rowspan="1" style="border-color: rgb(0, 0, 0);" width="540">Rare-earth-doped lithium yttrium fluoride crystal (RE: LiYF4)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="404">Crystal Structure</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="540">Tetragonal </td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="404">Lattice Constant</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="540">a=5.16 Å c=4.85 Å</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="404">Density</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="540">3.99(g/cm3)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="404">Moss hardness</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="540">5</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="404">Melt Point</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="540">819℃</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="404">Thermal Conductivity</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="540">a: 5.3 w/(mK); c: 7.2W(mK)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="404">Temperature coefficient of RI</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="540">a: -14.3x10-6K-1; c: -10.1X10-6K-1(C)</td></tr><tr><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="404">RI @1064</td><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="540">no=1.448; ne=1.470</td></tr><tr><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="404">Dia.</td><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="540">2-36mm</td></tr><tr><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="404">Length</td><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="540">2-50mm </td></tr></tbody></table> Note: Re:LiYF4, Re~ Yb, Tm, Ho, Tm+Ho or Pr." ["content2"] => string(32) "Dia.(2mm-36mm)*(2mm-50mm)" ["content_detail"] => string(1914) "Rare-earth-doped lithium yttrium fluoride (RE: LiYF4) is a type of laser crystal that has unique properties such as a high laser damage threshold, large emission cross-section, and broad tunability range. It has been extensively studied and optimized for laser applications in different fields. RE: LiYF4 crystal is composed of lithium (Li+), yttrium (Y3+), and fluorine (F-) ions, and rare-earth dopants such as Ytterbium (Yb), Thulium(Tm), Holmium (Ho), Tm+Ho or Praseodymium(Pr) are incorporated into the crystal lattice. The crystal structure is tetragonal, belonging to the space group I4<span style="box-sizing: border-box; margin: 0px; padding: 0px; position: relative; font-size: 12px; line-height: 0; vertical-align: baseline; bottom: -0.25em; color: rgb(51, 51, 51); font-family: Arial, 微软雅黑; text-align: justify; background-color: rgb(255, 255, 255);">1/a. The use of RE: LiYF4 crystal in laser applications is expected to increase in the future due to its unique properties and advantages. Ongoing research is focused on developing new rare-earth dopants and optimizing the crystal's performance for specific laser applications. RE: LiYF4 crystal is expected to find new applications in areas such as laser communications, remote sensing, and military applications. " ["cate_id"] => string(1) "6" ["cateid_extend"] => NULL ["brand_id"] => NULL ["pic_id"] => string(0) "" ["banner_id"] => string(0) "" ["file_id"] => NULL ["doc_id"] => string(0) "" ["is_hot"] => string(1) "0" ["is_jp"] => string(1) "0" ["is_rec"] => string(1) "0" ["tag"] => NULL ["sort"] => string(4) "1106" ["create_time"] => string(10) "1676945922" ["update_time"] => string(10) "1676945922" ["status"] => string(1) "1" ["meta_title"] => string(0) "" ["meta_key"] => string(0) "" ["meta_desc"] => string(0) "" ["model"] => string(0) "" ["feature"] => string(1136) "RE: LiYF4 crystal has several key features and advantages that make it attractive for laser applications. These include: —Small absorption loss in the ultraviolet spectral region —Low nonlinear refractive index and thermo-optical constant — the negative refractive index temperature coefficient can offset the thermal distortion, so as to output high-beam quality lase —Higher slope efficiency and lower threshold compared with YAG crystal —Better thermal stability than YAG crystal, with lower phonon energy and longer fluorescence life. —High laser damage threshold: RE: LiYF4 crystal has a high resistance to laser-induced damage, which allows for high-power laser operation. —Large emission cross-section: RE: LiYF4 crystal has a large absorption and emission cross-section, which results in efficient laser emission. —Broad tunability range: RE: LiYF4 crystal can be doped with different rare-earth ions, which can broaden the laser tunability range. —Low quantum defect: RE: LiYF4 crystal has a low quantum defect, which means that a high percentage of the pump energy is converted to laser radiation." } [6] => array(28) { ["id"] => string(3) "163" ["lang"] => string(2) "en" ["title"] => string(10) "RE: LiLuF4" ["brief"] => string(348) "Rare-earth-doped lithium lutetium fluoride crystal (RE: LiLuF4) is a type of crystal that contains rare earth elements, such as erbium, thulium, or holmium, which are added to a matrix of lithium and lutetium fluoride. It is known for its excellent optical and spectroscopic properties, making it an attractive material for various applications." ["application"] => string(435) "RE: LiLuF4 crystal has a wide range of applications in the field of optics and photonics. It is used as a laser material for generating mid-infrared radiation, as well as a gain medium for optical amplifiers. It is also used as a scintillator for gamma-ray detection and in medical imaging applications. Additionally, RE: LiLuF4 crystal has potential applications in quantum computing and communication due to its long coherence times." ["content"] => string(5593) "<table width="944"><tbody><tr class="firstRow"><td valign="top" colspan="1" rowspan="1" style="border-color: rgb(0, 0, 0);" width="289">Name </td><td valign="top" colspan="1" rowspan="1" style="border-color: rgb(0, 0, 0);" width="655">Rare-earth-doped lithium lutetium fluoride crystal (RE: LiLuF4)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="289">Crystal Structure</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="655">Tetragonal </td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="289">Lattice Constant</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="655">a=5.16 Å c=10.85 Å</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="289">Density</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="655">6.19(g/cm3)</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="289">Moss hardness</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="655">5</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="289">Melt Point</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="655">850℃</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="289">Thermal Conductivity</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="655">a: 5.0 w/(mK); c: 6.3W(mK)</td></tr><tr><td valign="top" colspan="1" rowspan="1" style="border-color: rgb(0, 0, 0);" width="289">Heat Capacity </td><td valign="top" colspan="1" rowspan="1" style="border-color: rgb(0, 0, 0);" width="655">0.53J/g.K</td></tr><tr><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="289">Temperature coefficient of RI</td><td valign="top" style="padding: 0px 7px; border-color: rgb(0, 0, 0); box-sizing: inherit; margin: 0px; word-break: break-all;" width="655">a: -6.0x10-6K-1; c: 3.6X10-6K-1(C)</td></tr><tr><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="289">RI @1064</td><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="655">1.47</td></tr><tr><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="289">Dia.</td><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="655">2-36mm</td></tr><tr><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="289">Length</td><td valign="top" style="border-color: rgb(0, 0, 0); word-break: break-all;" width="655">2-50mm </td></tr></tbody></table> Note: Re:LiYF4, Re~ Yb, Tm, Ho, Tm+Ho or Pr. " ["content2"] => string(53) "Dia. : 2mm-36mm;Length：2mm-50mm. " ["content_detail"] => string(1657) "Rare-earth-doped lithium lutetium fluoride crystal (RE: LiLuF4) is a type of crystal that contains rare earth elements, such as erbium, thulium, or holmium, which are added to a matrix of lithium and lutetium fluoride. It is known for its excellent optical and spectroscopic properties, making it an attractive material for various applications.RE: LiLuF4 crystal has a tetragonal structure and belongs to the space group I41/a. The crystal lattice consists of alternating layers of LiF and LuF4, with rare earth ions occupying interstitial sites in the lattice. The rare earth ions serve as activators that introduce optical and spectroscopic properties into the crystal.It has low nonlinear refractive index and thermo-optical constant, negative refractive index temperature coefficient, can offset thermal distortion, and can output high beam quality laser. LLF crystal doped with trivalent rare earth ions has higher optical storage capacity. Compared with YAG crystal, LLF crystal has higher slope efficiency, lower threshold, lower phonon energy and longer fluorescence lifetime.The demand for RE: LiLuF4 crystal is expected to grow in the future due to its unique optical and spectroscopic properties and its potential applications in various fields. Researchers are exploring new ways to improve the crystal's performance and develop new applications, such as quantum information processing and communication. The development of new fabrication techniques and the use of new rare earth ions are expected to further enhance the crystal's properties and expand its applications in the future. " ["cate_id"] => string(1) "6" ["cateid_extend"] => NULL ["brand_id"] => NULL ["pic_id"] => string(0) "" ["banner_id"] => string(0) "" ["file_id"] => NULL ["doc_id"] => string(0) "" ["is_hot"] => string(1) "0" ["is_jp"] => string(1) "0" ["is_rec"] => string(1) "0" ["tag"] => NULL ["sort"] => string(4) "1107" ["create_time"] => string(10) "1676974315" ["update_time"] => string(10) "1676974315" ["status"] => string(1) "1" ["meta_title"] => string(0) "" ["meta_key"] => string(0) "" ["meta_desc"] => string(0) "" ["model"] => string(0) "" ["feature"] => string(480) "One of the key features of RE: LiLuF4 crystal is its unique optical properties, such as high luminescence efficiency, broad absorption and emission bands, and long fluorescence lifetimes. These properties make it an excellent material for various applications, such as lasers, amplifiers, and scintillators. Additionally, RE: LiLuF4 crystal has a high damage threshold, good thermal stability, and low phonon energy, making it an ideal candidate for high-power laser applications." } }

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