ZGP ZnGeP2 Zinc Germanium Phosphide Mid IR Nonlinear Large Susceptibility
Brand Name:CRYLINK
Certification:Iso9001
Model Number:CRYLINK-ZGP(ZnGeP2) Nonlinear Crystal
Minimum Order Quantity:1 Pieces
Delivery Time:3-4 weeks
Payment Terms:TT
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Shanghai Shanghai China
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No.200, Zgaoxian Road, Jiading Zone, Shanghai, China
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Product Details
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 0.7412 mm 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.
Chemical and Physical properties
| Property | Value |
| Chemical Formula | ZnGeP2 |
| Crystal Structure | Tetragonal,`42m |
| Lattice Parameter | a=b=5.467, c=12.736 |
| Mass Density | 4.16 g/cm3 |
| Moh Hardness | 5.5 |
| Melting Point | About 1040°C |
| Thermal Conductivity | 180 W/m/K |
| Thermal Expansion Coefficient | ‖,5×10-6/K; ⊥,7.8×10-6/K |
| Birefringence | positive uniaxial |
Linear Optical Properties
| Property | Value |
| Transparency Range | 0.74 12 um |
| Absorption Coefficient | <0.05cm-1 @2050-2100 nm |
| Refractive Indices | |
| @ 2.05 um | no = 3.1478, ne = 3.1891 |
| @ 2.79 um | no = 3.1333, ne = 3.1744 |
| @ 5.30 um | no = 3.1136, ne = 3.1547 |
| @ 10.6 um | no = 3.0729, ne = 3.1143 |
| Sellmeier Equations( in m) | no2() = 4.64467+5.10087/(2-0.13656)+4.277772/(2-1653.89) |
| ne2() = 4.71539+5.26358/(2-0.14386)+2.373102/(2-1000.82) | |
Nonlinear Optical Properties
| Property | Value |
| SHG Phase Matchable Range | 3177 10357nm (Type I) |
| NLO coefficients | d36=758 pm/V |
| Typedeeo=d36 sin2cos2 | |
| Typedoeo=deoo=d36 sinsin2 | |
| Damage Threshold | |
| at 2.79 um | 30 GW/cm2 (150 ps) |
| at 10.6 um | 1 GW/cm2 (2 ns) |
Linear Absorption Coefficient
| [um] | [cm-1] | Note |
| 1.064 | 1.52 | |
| 1.06 | best crystals | |
| 1.9 | 0.80.95 | |
| 2 | 0.15 | o-wave, best crystals |
| 0.16 | ||
| 2.05 | 0.35 | |
| 0.26 | o-wave | |
| 0.23 | ||
| 0.2 | o-wave, after annealing | |
| <0.1 | best crystals | |
| 0.09 | best crystals | |
| 0.020.04 | after annealing and radiation processing | |
| 2.08 | 0.62 | o-wave, mean value |
| 1.2 | e-wave, mean value | |
| 2.15 | 0.6 | |
| 0.090.25 | typical crystals, o-wave | |
| 0.03 | best crystals, o-wave | |
| 2.39 | 0.55 | |
| 2.5 | 0.11 | o-wave, as-grown crystals |
| 2.58 | <0.1 | |
| 2.58.3 | <0.2 | |
| 2.58.5 | <0.1 | |
| 2.73 | 0.03 |
ZGP ZnGeP2 Zinc Germanium Phosphide Mid IR Nonlinear Large Susceptibility
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