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Specifications
1.Crystal Structure:Cubic Garnet2.Dopant Level:0.5 mol% ~ 3 mol%
3.Refractive Index:1.82 at 1064 nm
4.Chip<0.1
KTP (KTiOPO4) is an excellent non-linear crystal. It exhibts high optical quality, broad transparent range, relatively effective SHG coefficient ( about 3 times higher than that of KDP), very high optical damage threshold, wide acceptance angle, small walk-off , and type Ⅰand type Ⅱ non-critial phase-matching (NCPM) in a wide wavelength range. KTP is the most commonly used material for frequency doubling of Nd:YAG laser and other Nd-doped lasers, particularly at the low or medium power density. The properties of KTP make it superior as an electro-optic modulator as well as an optical waveguide device, including phase modulators, amplitude modulators and directional couplers.
Applications:
• Second harmonic generator of radiation 1.064 µm
• Optical parametric oscilator in near IR region up to 4 µm
• Different frequency generator in near IR region
Specifications:
| Flank Size(W*H): | 1×1~15×15 |
| Length(L): | 0.05~20mm |
| Angle Tolerance: | Δθ< ± 0.2°; Δφ< ±0.2° |
| Size Tolerance: | (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm) |
| Flatness: | <λ/8 @ 633nm |
| Smooth Finish: | 20/10 |
| Parallelism: | <30" |
| Perpendicularity: | <10' |
| Wavefront Distortion: | < λ/8 @ 633nm |
| Clear Aperture: | > 90% |
| Coating: | According to customer request |
Physical and Optical Properties:
| Crystal Structure | orthorhombic system, space group Pna21, point group mm2 |
| Cell Parameters | a=6.404?, b=10.616?, c=12.814, Z=8 |
| Melting Point | About 1172 Degree |
| Mohs Hardness | 5 |
| Density | 3.01 g/cm3 |
| Thermal Conductivity | 13W/m/K |
| thermal expansion coefficient | ax=11x10-6/0C, ay=9x10-6/0C, az=0.6x10-6/0C |
| Dialytic Wavebands | 350~4500nm |
| SHG | 497 ~ 1800nm (Type II) |
| Thermo-Optical Coeffecient(/°C) |
dnx/dT=1.1X10-5 dny/dT=1.3X10-5 dnz/dT=1.6X10-5 |
| Absorption Coefficient | <0.1%/cm at 1064nm <1%/cm at 532nm |
| For Type II SHG of a Nd:YAG laser at 1064nm |
Temperature Acceptance: 24°C-cm Spectral Acceptance: 0.56nm-cm Angular Acceptance: 14.2mrad-cm (φ);55.3mrad-cm (q) Walk-off Angle: 0.55° |
| Nonlinear Coefficient |
d31=6.5 pm/V d24=7.6 pm/V d32= 5 pm/V d15=6.1 pm/V d33=13.7 pm/V |
| 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 |
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