ZGP Crystal mid-IR nonlinear crystal for SHG, SFG, OPO, and OPG/OPA - CRYLINK
Description
ZnGeP2（Zinc germanium phosphide）crystal has many good properties and is an mid-IR nonlinear crystal. The nonlinear susceptibility of ZnGeP2 (ZGP) crystal is approximately 160 times large (d36~75 pm/V) as KDP, ZGP shows good optical transparency over the 740 – 12000 nm and relatively high laser damage threshold and is therefore well suited for producing near infrared tunable laser. ZGP is a very hopeful material for mid-infrared devices such as SHG, SFG, OPO, and OPG/OPA.
Zinc Germanium phosphide (ZGP) has large nonlinear coefficient, high laser damage threshold and high thermal conductivity. These characteristics make ZGP very suitable for high-power applications. Most commonly, ZGP is used for OPO, OPA and OPCPA pumped by holmium and Thulium fiber lasers to produce high-power tunable output between 3.0 µ m and 6.0 µ m, but other processes can also be used. ZGP has mechanical stability and stability in a wide working temperature range.
ZGP Crystal mid-IR nonlinear crystal for SHG, SFG, OPO, and OPG/OPA - CRYLINK
Specifications |
|
|---|---|
| Crystal Type: | ZnGeP2 (ZGP) |
| Phase Mathcing Type: | Type I, Type II |
| Mounting: | Mounted, Unmounted |
| Width: | 5~7 mm |
| Height: | 3~5 mm |
| Length: | 10~20 mm |
| Flatness: | <= Lambda/20, <= Lambda/10, <= Lambda/8, <= Lambda/6, <= Lambda/4, <= Lambda/3, <= Lambda/2 |
| Surface Quality (Scratch-Dig): | 10-5, 20-10, 40-20, 60-40, 80-50 |
| AR Coating: | One side, Both Sides, Not Coated |
| Thermal Expansion Coefficient: | β‖,5×10-6/K; β⊥,7.8×10-6/K |
| Birefringence: | positive uniaxial |
| SHG Phase Matchable Range: | 3177 ∼ 10357nm (Type I) |
| Damage Threshold: | at 2.79 um 30 GW/cm2 (150 ps) |
| Damage Threshold: | at 10.6 um 1 GW/cm2 (2 ns) |
| Thermal Conductivity: | 180 W/m/K |
| Melting Point: | About 1040°C |
| Moh Hardness: | 5.5 |
| Mass Density: | 4.16 g/cm3 |
| Lattice Parameter: | a=b=5.467Å, c=12.736Å |
| Chemical Formula: | ZnGeP2 |
Features
· Nonlinear coefficient is large
· The region of transmission is from 0.74 um to 12um
· High relative damage threshold
· High thermal conductivity
· The region of transparency is wide
· Phase matching over a broad spectral region
Applications
Producing coherent radiation in sub-millimeter-range from 70.0 μm to 1000 μm – terahertz range
Combining frequencies of CO2– and CO-lasers radiation or other lasers that working in the transparency region of ZGP
SHG of CO-laser
Second, third, and fourth harmonic generation of CO2 laser
OPO(Optical parametric generation) with pumping at wavelengths of 2.05-2.94 μm and possibility to generate effectively 3-10 μm ranges
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Ships from:
China
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On FindLight:
since 2021
Frequently Asked Questions
The ZGP crystal is used for producing coherent radiation, combining frequencies of lasers, second, third, and fourth harmonic generation, and optical parametric generation.
The region of transmission for the ZGP crystal is from 0.74 µm to 12 µm.
The ZGP crystal has a large nonlinear coefficient, high relative damage threshold, high thermal conductivity, and a wide region of transparency.
The ZGP crystal can be used for producing coherent radiation in the sub-millimeter range, combining frequencies of CO2 and CO-lasers radiation, second, third, and fourth harmonic generation of CO2 laser, and optical parametric generation.
The chemical formula of the ZGP crystal is ZnGeP2.