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Optical constants of Amorphous Materials - AMTIR
AMTIR-3 (out of production)

Wavelength: µm
 (3 – 14)  
 

Other optical constants

logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{5.8505λ^2}{λ^2-0.29192^2}+\frac{1.4536λ^2}{λ^2-42.714^2}$$

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

References

Handbook of Optics, Vol. 2, 2nd edition. McGraw-Hill 1994

More info - wiki

Infrared glasses

Often, calcogenide glasses are used in the optical systems operating at infrared wavelengths ~1-14 µm (for instance, optical systems for thermal imaging and night vision)

Infrared glass types/brands from different makers

Cross-reference

Composition AMI VITRON SCHOTT LightPath RPO
Ge33As12Se55 AMTIR-1 IG 2 IRG 22 OPTIR-1
Ge30Sb13Se32Te25 IG 3 IRG 23
Ge10As40Se50 IG 4 IRG 24
Ge28Sb12Se60 AMTIR-3* IG 5 IRG 25 BD-2 OPTIR-3
As40Se60 AMTIR-2 IG 6 IRG 26
As40S60 AMTIR-6

(*) Out of production

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