KTP Crystal
KTP CRYSTAL Manufacturing Capabilities
Parameter | Specs |
Angle tolerance: | Δθ< ± 0.5°; Δφ< ±0.5° |
Dimensional Tolerance: | (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2/-0.1mm) |
Flatness: | <L/8 at 633nm |
Surface Quality(S/D): | 10/5 before coating, 20/10 after coated |
Parallelism: | <20 arc seconds |
Perpendicularity: | <5 arc minutes |
Wavefront Distortion: | <L/8 at 632.8nm |
Clear Aperture: | Central 95% |
Bevel (leg width): | <0.15mm x 45degree |
Coating: | * Protective coating is required to prevent polished surfaces from fogging. |
* Anti-reflective coating should be considered if low reflectivity is required. | |
Mount: | Black Anodized Aluminium |
CRYLIGHT'S production lines of crystal
Large Nonlinear Optical (NLO) Coefficients
Wide Angular Bandwidth and Small Walk-off Angle
Broad Temperature and Spectral Bandwidth
High Electro-Optic (E-O) Coefficient and Low Dielectric Constant
Large Figure of Merit for an Optical Waveguide Modulator
Nonhygroscopic, Good Chemical, and Mechanical Properties.
Properties of KTP Crystal
Crystal structure | Orthorhombic, point group mm2 |
Melting point | 1172°C incongruent |
Cell parameters | a=6.404Ä, b=10.616Ä, c=12.814Ä, Z=8 |
Curie point | 936°C |
Mohs hardness | ~5 |
Density | 3.01 g/cm3 |
Color | colorless |
Hygroscopic susceptibility | no |
Specific heat | 0.1643 cal/g.°C |
Thermal conductivity | 0.13 W/cm/°K |
Electrical conductivity | 3.5x10-8s/cm (c-axis, 22°C, 1KHz) |
Transmitting range | 350nm~4500nm | |||
Refractive indices | - | nx | ny | nz |
1064nm | 1.7377 | 1.7453 | 1.8297 | |
532nm | 1.7780 | 1.7886 | 1.8887 | |
Absorption coefficients | a < 1%/cm @1.064µ m and 0.532µ m | |||
Phase matchable range | 0.984 - 3.4 µ m | |||
Therm-optic coefficients | dnx/dT=1.1x10-5/°C, dny/dT=1.3x10-5/oC, dnz/dT=1.6x10-5/°C | |||
Nonlinear optical coefficients | d31=2.54pm/V, d32=4.35pm/V, d33=16.9pm/V | |||
Electro-optic coefficients | - | Low frequency(pm/V) | High requency(pm/V) | |
γ13 | 9.5 | 8.8 | ||
Dielectric constant | eeff=13 |
KTP 晶体的 Sellmeier 方程
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
CRYLIGHT'S production lines of crystal
Grinding
Polishing
Polishing
Coating
Spectrophotometer
Inspection
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