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 AgGaSe2 Crystal - Sellmeier Equations


 AgGaSe2 Crystal Properties


 n²(λ) = 4.6453 + 2.2057/(1 - 0.1879/λ²) + 1.8577/(1 - 1600/λ²)

 ne²(λ) = 5.2912 + 1.3970/(1 - 0.2845/λ²) + 1.9282/(1 - 1600/λ²)



                      

  








Optical Properties

Units

Value

Transmission/Transparency Range

µm

0.73 - 18.0

Refractive Index (n) @1.06µm


n = 2.7010

ne = 2.6792

                                 @5.3µm


n = 2.6134

ne = 2.5808

                                 @10.6µm


n = 2.5912

ne = 2.5579

Non-linear Coefficient @10.6µm (d36)

pm/V

39.5

Phase Matching Angle - Type I SHG@10.6um

º

55

Walk Off @5.3µm

º

0.67

Absorption Coefficient @1.06µm

cm‾¹

<0.05

                                     @2.5µm

cm‾¹

<0.01

                                     @5.0µm

cm‾¹

<0.01

                                     @7.5µm

cm‾¹

TBA

                                     @10.6µm

cm‾¹

<0.02

                                     @11.0µm

cm‾¹

TBA

Physical / Thermal Properties

Units

Value

 Chemical Formula


AgGaSe₂

 Crystal Symmetry


Tetragonal

 Point Group


42M

Melting Point

ºC

851

 Thermal Expansion Coeff. @20ºC

 10‾⁶/ºC

┴  19.8

║   -8.1

Thermal Conductivity Coeff. @20ºC

W/m/ºK

1

 Specific Heat Capacity

 J/g K

TBA

 Density  

g/cm³

5.7

 Mohs Hardness


3 - 3.5

 Optical Damage Threshold @1.064,10ns

MW/cm²

20 - 30

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 AgGaSe2 / AGSE Crystals


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 AgGaSe2 Crystal - Availability


                      

  








Silver Gallium Selenite (AgGaSe₂ or AGSE), along with AgGaS₂, are useful NLO crystals, with large nonlinear (NLO) coefficients, which can operate in the infra-red (IR) part of the spectrum. AgGaSe2 has been proven in a broad range of NLO applications.


AGSE strengths/features include:


  

AGSE applications include: