| Introduction
ZnGeP2 single crystals are designed for laser frequency conversion from one spectral range to another one and can be used for:
- creation of optical parametric oscillators (OPO) — coherent radiation sources
 tunable within 2.5—12 micron spectral range when pumping with a laser radiation of 2um wavelength;
- generation of СО- and СО2-laser radiation harmonics;
- generation of radiation of both sum and difference frequencies from СО, СО2 and other middle IR range lasers radiation (1 - 11 µm).
ZnGeP2's Applications:
Coherent radiation sources tunable in 2-11 µm spectral range based on parametric frequency conversion of laser radiation allow solving a number of applied problems of high-resolution spectroscopy:
- remote monitoring of industrial and anthropogenic emissions to the atmosphere;
- remote identification and monitoring of concentration of various toxic gas mixtures and gaseous products or industrial discharge in power engineering, chemistry, and petroleum industry;
- creation of detection systems for monitoring of pipeline breaking;
- design of warning systems for explosive mixtures (methane);
- control and certification of high-purity gases used in microelectronics and semiconductor engineering;
- monitoring and control of special technological processes, for example, annihilation of toxic agents.
MAIN PROPERTIES:
| Transparency range, µm |
0.75 - 12.0 |
| Point group |
42m |
| Density, g/cm 3 |
4.12 |
| Mohs hardness |
5.5 |
| Refractive indexes: |
|
| at 2.00 µm |
n o = 3.1490; n e = 3.1889 |
| at 4.00 µm |
n o = 3.1223; n e = 3.1608 |
| at 6.00 µm |
n o = 3.1101; n e = 3.1480 |
| at 8.00 µm |
n o = 3.0961; n e = 3.1350 |
| at 10.00 µm |
n o = 3.0788; n e = 3.1183 |
| at 12.00 µm |
n o = 3.0552; n e = 3.0949 |
| Non-linear coefficient, pm/V |
d 36 = 68.9 (at 10.6 µm), d 36 = 75.0 (at 9.6 µm) |
| Optical damage threshold, MW/cm 2 |
60 (at 10.6 µm, 150 ns) |
Specification:
| Dimension tolerance |
(W ± 0.1 mm) x (H ± 0.1 mm) x (L +/- 0.2 mm) |
| Transmitting wavefront distortion: |
l/8 @ 633 nm |
| Clear aperture: |
> 90% central area |
| Flatness: |
l/8 @ 633 nm |
| Scratch/Dig code: |
10/5 to MIL-O-13830A |
| Parallelism: |
better than 20 arc seconds |
| Perpendicularity: |
5 arc minutes |
| Angle tolerance: |
Dq < ±0.5°, Df < ± 0.5° |
| AR coating: |
R< 0.1% at 1064nm and R<0.4% at 532 nm. |
| Quality Warranty Period: |
one year under proper use. |
CLASER develop the ZnGeP2 crystals for the CO2 Laser application. More details, please contact our sales engineer. |
NLO crystals