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ZGP ZnGeP2 Zinc Germanium Phosphide Mid IR Nonlinear Large Susceptibility

Categories Nonlinear Crystals
Place of Origin: China
Brand Name: CRYLINK
Certification: Iso9001
MOQ: 1 Pieces
Price: negotiation
Packaging Details: Carton
Delivery Time: 3-4 weeks
Payment Terms: TT
Supply Ability: 100 pieces /month
Model Number: CRYLINK-ZGP(ZnGeP2) Nonlinear Crystal
Name: ZGP(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
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ZGP ZnGeP2 Zinc Germanium Phosphide Mid IR Nonlinear Large Susceptibility

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

PropertyValue
Chemical FormulaZnGeP2
Crystal StructureTetragonal,`42m
Lattice Parametera=b=5.467, c=12.736
Mass Density4.16 g/cm3
Moh Hardness5.5
Melting PointAbout 1040°C
Thermal Conductivity180 W/m/K
Thermal Expansion Coefficient‖,5×10-6/K; ⊥,7.8×10-6/K
Birefringencepositive uniaxial

Linear Optical Properties
PropertyValue
Transparency Range0.74 12 um
Absorption Coefficient<0.05cm-1 @2050-2100 nm
Refractive Indices
@ 2.05 umno = 3.1478, ne = 3.1891
@ 2.79 umno = 3.1333, ne = 3.1744
@ 5.30 umno = 3.1136, ne = 3.1547
@ 10.6 umno = 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
PropertyValue
SHG Phase Matchable Range3177 10357nm (Type I)
NLO coefficientsd36=758 pm/V
Typedeeo=d36 sin2cos2
Typedoeo=deoo=d36 sinsin2
Damage Threshold
at 2.79 um30 GW/cm2 (150 ps)
at 10.6 um1 GW/cm2 (2 ns)

Linear Absorption Coefficient
[um][cm-1]Note
1.0641.52
1.06best crystals
1.90.80.95
20.15o-wave, best crystals
0.16
2.050.35
0.26o-wave
0.23
0.2o-wave, after annealing
<0.1best crystals
0.09best crystals
0.020.04after annealing and radiation processing
2.080.62o-wave, mean value
1.2e-wave, mean value
2.150.6
0.090.25typical crystals, o-wave
0.03best crystals, o-wave
2.390.55
2.50.11o-wave, as-grown crystals
2.58<0.1
2.58.3<0.2
2.58.5<0.1
2.730.03
Quality ZGP ZnGeP2 Zinc Germanium Phosphide Mid IR Nonlinear Large Susceptibility for sale
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