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basic information
Product Details


The KTiOPO4 (KTP) crystal grown by hydrothermal method is a kind of nonlinear optical crystal with very good performance. It has a large non-linear coefficient, allows a wide range of temperature matching and allowable angle matching, anti-greige resistance It is widely used in military scientific research, medical treatment, marine optics, laser weapons, etc. It can be used in laser frequency doubler, frequency difference, difference frequency, parametric oscillation and optical waveguide devices, electro-optic modulators and so on. And environmental remote sensing monitoring and other fields. It has the following features:

  ① high resistance to laser damage, high resistance to gray-scale performance, high optical quality

  ② SHG phase matching angle (1064-532nm): 23.4°at 25 ℃

  ③ Conductivity: 10-10 /Ω·cm magnitude;

  ④ domain structure: single domain


Crystal structure Orthorhombic system
Crystal parameters a=6.404?,b=10.616?, c=12.814?, Z=8
Density 3.01 g/cm3 
Range of transparent band 350~4500nm
SHG phase matching 497 ~ 1800nm (Type II)
Sizes 3x3x5~10mm; 4x4x5~10mm; 5x5x5~15mm
Dimension tolerance End face:±0.1mm; Length:+0.5mm
End face parallelism ≤ 10"
Perpendicularity ≤ 10′
Flatness λ/10 @632.8nm
Surface quality 20/10 (MIL-O-13830A)
Chamfer 0.15±0.05mm x45°
Coating S1:R<0.2%@1064nm + R<0.5%@532nm
S2: R>99.8%1064nm + T>95%@532nm
Damage threshold ≥5J/cm2 10ns 10Hz
Absorption <0.1%/cm@1064nm  <1%/cm@532nm
Special specifications It can be customized