KTA is a nonlinear optical crystal for Optical Parametric Oscillation application.It has the characteristics of wide angle and temperature bandwidth, low dielectric constant, etc.
We offer：
♦ Standard KTA crystals ex-stock and crystals with size up to 15 × 15 × 30 mm
♦ AR and BBAR coatings for VIS-IR and mid IR ranges
♦ Standard and customized mounts and housings as well as technical consulting
Main features:
♦ Large electro-optic coefficient and large nonlinear optical coefficient
♦ High damage threshold
♦ Has a wide temperature and spectral range
♦ Can withstand higher power density
♦ Low dielectric constant ionic conductivity (much smaller than KTP)
♦ 3.0-4.0 μm band has less absorption
♦ Wide acceptance angle and small walk-off angle
Typical applications:
♦ Optical Parametric Oscillation
♦ Frequency doubling (SHG @ 1083-3789 nm)
♦ Optical waveguide optoelectronic Q-switching and modulation
♦ Sum frequency , difference frequency generation
Transparency curve of KTA
Technical Parameters
Argument Name | Values and Ranges |
Size tolerance | ±0.1 mm |
Dimension tolerance | ≤ 0.2° |
Clear aperture | > 90% |
Surface quality | 10/5, 20/10 after coating |
Flatness | < λ/8@633nm |
Wavefront distortion | < λ/4@633nm |
Parallelism | < 20 arc sec |
Perpendicularity | < 10 arc min |
Coating | According to customers' requirements |
| Quality warranty period | 1 year (with normal use) |
Crystal Structure and Physical Properties
Argument Name | Values and Ranges |
Crystal structure | Orthorhombic, Point group mm2 |
Crystal parameters | a=13.125 Å , b=6.5716 Å , c=10.786 Å |
Melting point | 1130˚C |
| Mohs hardness | Near 5 Mohs |
Density | 3.454 g/cm3 |
Thermal conductivity | K1:1.8 W/m/K ; K2:1.9 W/m/K ; K3:2.1 W/m/K |
Standard Size
| Product No. | Size（mm) | θ（°） | Φ（°） | Coating | Application |
KTA-501 | 5 × 5 × 20 | 45 | 0 | AR@1064+(1500-4500) nm | For nanosecond OPO@1064 nm pump to generate in 1.5-4.5 μm range |
KTA-401 | 4 × 4 × 10 | 45 | 0 | AR@1064+(1500-4500) nm | For picosecond OPG/A@1064 nm pump to generate in 1.5-4.5 μm range |
KTA-601A | 6 × 6 × 1 | 47 | 0 | AR/AR@1.2-2.4/2.6-5.0 μm | For DFG mixing signal and idler at 1.2-2.4 microns to generate wavelengths from 2.6 μm up to 5 μm |
KTA-602A | 6 × 6 × 3 | 46 | 0 | AR@1030+(1700-5000) nm | For OPO@1030 nm pump to generate wavelengths from 1.5 up to 5 microns |
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