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ZnGeP2

ZnGeP2

Zinc germanium phosphide (ZnGeP2) is an excellent mid-IR nonlinear crystal with many outstanding fundamental properties. ZnGeP2 (ZGP) crystal has large nonlinear susceptibility (d36~75 pm/V), which is approximately 160 times that of KDP.

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Product Details

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1.Large nonlinear coefficient

2.High thermal conductivity

3.Relatively high damage threshold

4.Good mechanical and physical properties


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5 um CO-Laser used to

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   ●Aerospace science and technology
   ●Cutting and coagulating characteristics
   ●treating acute myocardial infarction


Other applications:

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THz time-domain spectrometer


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 Terahertz imaging cameras


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CO2 laser therapy apparatus


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Low bulk absorption

High Purity raw materials >99.999%

Low bulk absorption

Advanced raw material pre-sintering process

Advanced raw material pre-sintering process

No poly-crystalline defects


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Advanced polycrystalline synthesis technology

ZGP polycrystalline was synthesized by dynamic temperature field technique and the synthesis amount per time is greater than 500 g. The polycrystals synthesized by this method have high purity and large grain size.

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Advanced single crystal growth technology:Horizontal method

ZGP single crystal was grown by horizontal gradient condensation,combined with directional neck reduction technology.the dislocation density.This method reduces dislocation density effectively and produce high quality ZGP single crystals.

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Advanced single crystal growth technology:Vertical method

The ZGP single crystal with the largest diameter (55mm)in the world can be grown by vertical gradient condensation

》More information about Equipments


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Maximum boule size >dia50mm

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Absorption coefficient α<0.05cm-1 @2050-2100 nm

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No bubbles, scatering point and inclusions in crystals

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High doping concentration gradient homogeneity , 
typical value<0.02cm-1/inch

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No grain boundary in crystals




》More information about Crystal Growth

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High level dust-free clean room 

(1000) grade)


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2-sides polishing equipments


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AFM


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Interferometer

Advance CMP process, Ra<0.4nm          

Surface quality: >10/5           

Flatness: <λ/10@632nm

》More information about Polishing


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ZPCL1H3%D0QF71F_F5AW5GM.png       Customized coating service 

     S1,S2:AR@2100nm+BBAR@3500-5000nm

    

》More information about Coating

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PropertyValue
Chemical formula ZnGeP2
Crystal structureTetragonal,`42m
Lattice Parametera=b=5.467Å, c=12.736Å
Mass density4.16 g/cm3
Moh hardness5.5
Melting pointAbout 1040°C
Thermal conductivity180 W/m/K
Thermal expansion coefficient β‖,5x10-6/K; β⊥,7.8x10-6/K
Birefringencepositive uniaxial

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PropertyValue
Transparency Range0.74 - 12 um
Absorption Coefficientα<0.05cm-1 @2050-2100 nm
Refractive Indices

@ 2.05 um 

@ 2.79 um 

@ 5.30 um 

@ 10.6 um 


no = 3.1478, ne = 3.1891

no = 3.1333, ne = 3.1744

no = 3.1136, ne = 3.1547

no = 3.0729, ne = 3.1143


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)

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PropertyValue
SHG Phase Matchable Range3177 ∼ 10357nm (Type I)


NLO coefficients

d36=75 ± 8 pm/V

Type Ⅰ deeo=d36 sin2ϴcos2φ

Type Ⅱ doeo=deoo=d36 sinϴsin2φ

Damage Threshold

at 2.79 um

at 10.6 um 


30 GW/cm2 (150 ps)

1 GW/cm2 (2 ns)

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PropertyValue
Orientation Tolerence< 0.5°
Thickness/Diameter Tolerance±0.05 mm
Surface Flatness<λ/8@632 nm
Wavefront Distortion<λ/4@632 nm
Surface Quality10/5
Parallel30
Perpendicular15ˊ
Clear Aperture>90%
Chamfer<0.2×45°

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Crystal

dimension/mm
ApplicationOrientationTheta/Phi degCoatings
7x5x15  OPO @ 2.1-> 3.5-5 µm54/0AR@2.1µm+BBAR@3.5-5µm
7x5x20OPO @ 2.1-> 3.5-5 µm54/0AR@2.1µm+BBAR@3.5-5µm
7x5x25OPO @ 2.1-> 3.5-5 µm54/0AR@2.1µm+BBAR@3.5-5µm


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  The Transmission  of 15 mm long AR coated ZnGeP2                       OPO tuning curves of ZGP with pump light of 2090 nm

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  OPO tuning curves of ZGP with pump light of 2800 nm                                      SHG curves of ZGP (TypeI (eeo))


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History: 

Metalaser has engaged in crystal industry over 20 years which is one section    of Shanghai Daheng Optics and Fine Mechanics Co., Ltd held by SIOM. 

Team:     

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More than 60% of our employees are physics or material scientists from NIALT and SIOM.





》More information about our company

Alibaba Transaction History:

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We have set up a mall on the Alibaba, and there are many transaction record from all over the world.    

》Our Alibaba trade website

           

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Delivery in 3~4weeks

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Free samples can be provided

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Free ex change goods or sales return for once 

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Provides re-polished and coating

services (Coating damage only)

Note:Postage paid by the buyer

》More information about Service

 


With Laser Crystals for sale, it is one of the leading manufacturers and supplies of good zngep2, welcome to buy and wholesale products at good price from our factory.
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