Potassium Titanyle Arsenate(KTiOAsO4, or KTA) crystal is an excellent nonlinear optical crystal for Optical Parametric Oscillation (OPO) Application. OPO devices based on KTAs are reliable, solid state, tunable laser radiation exhibiting energy conversion efficiencies above 50%. In addition, KTA has a very high damage threshold.
APPLICATION:
Dimension Tolerance
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W(+/-0.1)*H(+/-0.1)*L(+0.5/-0.1)mm
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Angle Tolerance
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+/-0.25°
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Perpendicularity
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≤10′
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Scratch/Dig
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20/10
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Chamfer
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≤0.2mmx45°
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Parallelism
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≤20″
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Chips
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≤0.1mm
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Flatness
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λ/10@633nm
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Clear Aperture
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≥90%
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Wavefront distortion
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λ/4@633nm
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Coatings
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C1---AR@1064(R<0.2%)&1533(R<0.5%)&3475(R<10%)
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Damage Threshold
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500MW/cm² (1064nm, 10ns, 10Hz)
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Physical Property:
Crystal Structure | Orthorhombic, Point group mm2 |
Lattice Parameters | a=13.125Å ,b=6.5716Å, c=10.786Å; Z=8 |
Density | 3.454 g/cm3 |
Mohs Hardness | ~ 5 |
Melting Point | 1130°C |
Curie Point | 880°C |
Specific Heat | 0.687 cal/goC (25oC) |
Dielectric Constant | eeff =42 |
Absorption Coefficient | <0.05%/cm @1μm and 1.5μm |
Electrical Conductivity | 0.7-3.4 x10-6s/cm (c-axis, 22oC, 2KHz) |
Color | Colorless |
Hygroscopic Susceptibility | No |
Transparency Range | 0.35μm ~ 5.3μm | ||
Nonlinear Coefficients | d31=2.8 pm/V, d32=4.2 pm/V, d33=16.2 pm/V | ||
(@1.064μm) | d24=3.2 pm/V, d15=2.3 pm/V | ||
Electro-optical constants | r33 | r23 | r13 |
(low frequency) | 37.5 pm/V | 15.4 pm/V | 11.5 pm |
Sellmeier Equations | nx2 = 1.90713+1.23522l2/(λ2-0.19692)-0.01025λ2 | ||
(λ in μm) | ny2 = 2.15912+1.00099l2/(λ2-0.21844)-0.01096λ2 | ||
nz2 = 2.14768+1.29559l2/(λ2-0.22719)-0.01436λ2 | |||
Refractive Indexes (@1.064μm) | nx | ny | nz |
1.783 | 1.7893 | 1.8679 | |
SHG PM range | 1μm ~ 3μm | ||
cut angle for NCPM OPO | θ | φ | |
90 | 0 | ||
wavelength for NCPM OPO | Pump | Signal | Idler |
1064 nm | 1533 nm | 3475 nm |