Nonlinear optical crystal KTP (KTiOPO4)
KTP
(potassium titanyl phosphate)
Main Properties
| Compound | KTiOPO4 | |
| Transparency range, µm | 0.35 – 4.5 | |
| Nonlinear coefficient, pm/V | d31 = 2.0; d32 = 3.6 | |
| Symmetry | Orthorhombic, mm2 point group | |
| Cell parameters, Å | a=12.818, b=6.404, c=10.596 | |
| Typical Reflection index |
1064 nm 532 nm |
nx=1.7381, ny=1.7458, nz=1.8302 nx=1.7785, ny=1.7892, nz=1.8894 |
| Optical Damage Threshold, GW/cm2 |
1064 nm (t=10 ns) |
~1 |
| Electrooptic coefficients, pm/V | r13=9.5, r23=15.7, r33=36.3 | |
| Mohs hardness | 5 | |
The parameters of optical elements
| Orientation accuracy, arc min | < 30 | |
| Parallelism, arc sec | < 30 | |
| Flatness | 546 nm | λ/6 |
| Surface quality, scratch/dig | 20/10 | |
Application
- Optical parametric oscillation (OPO) in near IR region up to 4 µm
- Different frequency generation (DFG) in near IR region up to 4 µm
- Second harmonic generation (SHG) of radiation 1.064 µm
We are able to provide suitable Anti-reflection / Protective, etc. coatings tailored to customer’s specifications, reflectivity curves are applied upon request.