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. 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.
Uses/Applications
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.
Features/Benefits
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.
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Crystal Structure
Cubic
Lattice Constant
12.01 Å
Density
4.56±0.04 (g/cm3)
Melt Point
1970℃
Mohs Hardness
8.5(mohs)
Specific Heat Capacity
(0-20℃) 0.59 J/g.cm3
Elastic modulus
310 GPa
Young's modulus
3.17X104Kg/mm2
Poisson's ratio
0.3 (est.)
Tensile strength
0.13~0.26 GPa
Thermal Expansion
<100>(0~250°C )
Direction: 8.2x10-6 /°C
<110>(0~250°C )
7.7x10-6/°C
<111>(0~250°C )
7.7x10-6/°C
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Customize upon request.