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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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