Potassium Titanyle Arsenate - KTA Crystals
Potassium titanyle arsenate (KTiOAsO4), or KTA, is a nonlinear optical crystal for Optical Parametric Oscillation (OPO) application. It has good non-linear optical and electro-optical properties, e.g. significantly… Read more →
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| SKU | L, mm · Group · θ · Coating · W, mm · H, mm · Note · φ | |
|---|---|---|
| KTA-503 | 20·For nanosecond OPO@1064 nm pump to generate in 1.5-4.5 μm range·45·AR@1064+(1500-4500) nm·5·5·0 |
Out of stock
Ships in: 62–65 calendar days
$2,988
|
| KTA-504 | 10·For picosecond OPG/A@1064 nm pump to generate in 1.5-4.5 μm range·45·AR@1064+(1500-4500) nm·5·5·0 |
Out of stock
Ships in: 62–65 calendar days
$1,272
|
| KTA-601H | 1·For DFG mixing signal and idler at 1.2-2.4 microns to generate wavelengths from 2.6 μm up to 5 μm·47·AR/AR@1.2-2.4/2.6-5.0 μm·6·6·Crystal is for DFG application, whereas signal and idler waves are obtained from BBO crystal using OPG/A pumped by femtosecond Ti:Sapphire laser.·0 |
Out of stock
Ships in: 62–65 calendar days
$810
|
| KTA-602H | 3·For OPO@1030 nm pump to generate wavelengths from 1.5 up to 5 microns·46·AR@1030+(1700-5000) nm·6·6·Crystal is dedicated for femtosecond laser pump with pulse duration ~100-300 fsec.·0 |
Out of stock
Ships in: 62–65 calendar days
$708
|
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Specifications
| Crystal structure | orthorhombic |
| Point group | mm2 |
| Space group | Pna21 |
| Lattice constants | a = 13,125, b = 6,5716, c = 10,786 Å |
| Density | 3,45 g / cm³ |
| Melting point | 1130 °C |
| Mohs hardness | 5 |
| Thermal conductivity | k₁=1.8, k₂=1.9, k₃=2.1 W / m*K; |
| Not hygroscopic |
| Flatness | λ / 8@633 nm |
| Parallelism | > 20 arc sec |
| Surface quality | 10 / 5 Scratch / Dig (MIL-PRF-13830B) |
| Perpendicularity | > 15 arc min |
| Angle tolerance | < ± 0.2° |
| Aperture tolerance | ± 0.1 mm |
| Clear aperture | >90% central area |
| Transmitting wavefront distortion | less than λ / 8@633 nm |
| Transparency | 350–5300 nm |
| Wavelength dispersion of refractive indices | nx2=1.90713+1.23522*λ2 / (λ2-0.1969222)-0.01025* λ2 ny2=2.15912+1.00099*λ2 / (λ2-0.2184422)-0.01096* λ2 nz2=2.14768+1.29559*λ2 / (λ2-0.2271922)-0.01436* λ2 |
| Electro optical constants | r33=37.5 pm / V r23=15.4 pm / V r13=11.5 pm / V |
| Effective nonlinearity | |
| x-y plane | deoe = doee = d15sin2φ + d24cos2φ |
| x-z plane | doeo = deoo = d24sinθ d31=2.3 pm / V, d32=3.66 pm / V, d33=15.5 pm / V, d24=3.64 pm / V, d15=2.3 pm / V |
| Damage threshold | >500 MW / cm2 for pulses λ=1064 nm, τ=10ns, 10Hzm TEM00 |
Description
Potassium titanyle arsenate (KTiOAsO4), or KTA, is a nonlinear optical crystal for Optical Parametric Oscillation (OPO) application. It has good non-linear optical and electro-optical properties, e.g. significantly reduced absorption in band range of 2.0-5.0 µm, broad angular and temperature bandwidth, low dielectric constants.
Primary applications of KTA crystals:
- OPO for mid IR generation – up to 4 µm;
- Sum and Difference Frequency Generation in mid IR range;
- Electro-optical modulation and Q-switching;
Eksma Optics offers:
- Standard KTA crystals ex-stock and crystals with size up to 15x15x30 mm under request;
- AR and BBAR coatings for VIS-IR and mid IR ranges;
- Standard and customized mounts and housings; Technical consulting.