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ZnGeP2


ZGP has good optical transparency in the 740 – 12000 nm range and high laser damage threshold, making it ideal for producing near-infrared tunable lasers.

Classification:


ZnGeP2 (zinc germanium phosphide) crystals have many excellent properties and are mid-infrared nonlinear crystals. ZnGeP2 (ZGP) crystals are approximately 160 times more sensitive than KDP (d36 to 75 pm/V). ZGP has good optical transparency in the 740 – 12000 nm range and high laser damage threshold, making it ideal for producing near-infrared tunable lasers.

 

PRODUCT FEATURE

Large nonlinearity coefficient The transmission area is 74 um to 12 um High relative damage threshold High thermal conductivity Wide transparent area Phase matching over a wide spectral range

Large nonlinearity coefficient 

The transmission area is 74 um to 12 um

High relative damage threshold

High thermal conductivity

Wide transparent area

Phase matching over a wide spectral range

Specifications
Dimension Tolerance(W±0.1mm)×(H±0.1mm)×(L±0.2mm/0.1mm)
Angle ToleranceΔθ<±0.2°;Δφ<±0.2°
Parallelism<30" 
Perpendicularity<10′
Surface Quality (Scratch/Dig)20/10 (MIL-PRF-13830B)
Flatness<λ/8@633nm
Anti-Reflection CoatingAccording to customer requirements

 

Chemical and Structural Properties
Crystal Structuretetragonal , 42m
Lattice Parametera=b=5.467Å, c=12.736Å
Melting PointAbout 1040°C
Mohs Hardness5.5
Density4.17 g/cm3
Thermal Conductivity35.89 W/mK
Thermal Expansion Coefficientsβ‖,5×10-6/K; β⊥,7.8×10-6/K

 

Optical and Nonlinear Optical Properties
Transparency Range0.74 ∼ 12 um
SHG Phase Matchable Range3177∼10357nm (Type I)
Absorption Coefficientsα<0.05cm-1 @2050-2100 nm
Angular Acceptance30°(2um~12um)
NLO CoefficientsD36=68.9pm/V (at 10.6um) =75.0 pm/V (at 9.6 um)
Non-vanished NLO Susceptibilitiesd36=75 ± 8 pm/V
Type Ⅰ deeo=d36 sin2θcos2φ
Type Ⅱ doeo=deoo=d36 sinθsin2φ
Sellmeier Equations (λ in μm)no2(λ) = 4.64467+5.10087/(λ2-0.13656)+4.27777λ2/(λ2-1653.89)
ne2(λ) = 4.71539+5.26358/(λ2-0.14386)+2.37310λ2/(λ2-1000.82)

     

Keywords:

磷化锗锌

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