KTP
KTiOPO4 (KTP) crystal grown by hydrothermal method is a kind of nonlinear optical crystal with excellent performance. It has the characteristics of large nonlinear coefficient, large allowable temperature matching and allowable angle matching range, high anti ash trace and light damage threshold, stable chemical and mechanical properties. KTP can be used for laser frequency doubling, sum frequency, difference frequency, parametric oscillation, optical waveguide devices and electro-optic modulators. It is widely used in military scientific research, medical treatment, marine optics, laser weapons and environmental remote sensing monitoring.
Uses/Applications
KTP can be used for laser frequency doubling, sum frequency, difference frequency, parametric oscillation, optical waveguide devices and electro-optic modulators. It is widely used in military scientific research, medical treatment, marine optics, laser weapons and environmental remote sensing monitoring.
Features/Benefits
It has the characteristics of large nonlinear coefficient, large allowable temperature matching and allowable angle matching range, high anti ash trace and light damage threshold, stable chemical and mechanical properties.
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Crystal structure
Orthorhombic
Lattice parameters
A=6.404 a, b=10.616 a, c=12.814 a, Z=8
Melting point
1172°C
Curie point
936°C
Mohs hardness
5
Density
3.01g/cm3
Linear absorption coefficient
<0.1%/cm at 1064nm <1%/cm at 532nm
The relative dielectric constant
Eeff=13
Specific heat
0.1643 cal/g.°C
Conductivity
3.5x10-8 s/cm (c-axis, 22°C, 1KHz)
Thermal conductivity
13W/m/K
Transmission range
350~4500nm
Absorption coefficient
< 1%/cm @1064n M and 532 N M
SHG phase matching range
0.984-3.4 M
Calorescence coefficient (/ ℃)
dnx/dT=1.1x10-5/℃
dny/dT=1.3x10-5/℃
dnz/dT=1.6x10-5/℃
Nonlinear coefficient
d31=2.54pm/V, d31=4.35pm/V, d31=16.9pm/V
d24=3.64pm/V, d15=1.91pm/V at 1.064 µm
deff(II)≈ (d24-d15)sin2φsin2θ-(d15sin2φ+d24cos2φ)sinθ
Sellmeier equation (λ in μm)
nx2=3.0065+0.03901/(λ2-0.04251)-0.01327λ2
ny2=3.0333+0.04154/(λ2-0.04547)-0.01408λ2
nz2=3.3134+0.05694/(λ2-0.05658)-0.01682λ2
Damage threshold
> 450MW/cm2, (@1064nm 10ns, 10Hz)
Directional accuracy
Δθ<0.5°, Δφ<0.5°
Dimensional tolerance
±0.1mm
Standard Size
3×3×5mm, 5×5×5mm, 5×5×15mm, 10×10×15mm, 15×15×15mm
Surface finish
10/5
Clear aperture
>95%
Face type
<λ/8@633nm
Wavefront distortion
<λ/4@633nm
Parallelism
<20秒
Verticality
<15分
Residual reflectivity
<0.2%@1064nm, <0.5%@532nm
Shelf life
1 year
Coating
AR/AR@1064&532nm:
S1&S2 AR@1064&532nm, R<0.25%@1064nm, R<0.5%@532nm
HR/AR@1064&532nm:
S1 HR@1064nm&HT@532nm, R>99.8%@1064nm, R<5%@532nm
S2 AR@1064&532nm, R<0.25%@1064nm, R<0.5%@532nm
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Dimension
3×3×5mm3, 5×5×5mm3, 5×5×15mm3, 10×10×15mm3, 15×15×15mm3