Refractive index of SCHOTT - IRG

Optical constants of SCHOTT - IRG
IRG 23

Wavelength: µm

(1–12)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=3.74971+\frac{3.07065λ^2}{λ^2-0.498392^2}+\frac{0.953206λ^2}{λ^2-40.7557^2}$$

Comments

20 °C

References

SCHOTT Infrared Chalcogenide Glasses - IRG 23 Product flyer (Version May 2013)

Data

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

Optical transmission calculator

Wavelength: µm
Thickness:
Calculation method:

Transmittance[ i ]

T =

LogX LogY eV

Reflection calculator

Wavelength: µm
Angle of incidence (0~90°):
Direction: in out

Reflectance[ i ]

P-polarized

R_P =

S-polarized

R_S =

Non-polarized (Rp+Rs)/2

R =

R_P R_S R LogY

Reflection phase[ i ]

ɸ_P = °
ɸ_S = °

Brewster's angle[ i ]

θ_B = °

Critical angle[ i ] [ i ]

θ_C = °

INFO

Infrared glass

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

AMTIR (an acronym for "Amorphous Material Transmitting Infrared Radiation"): Amorphous Materials Inc. (AMI)
IG: VITRON
IRG: SCHOTT
BD: LightPath
OPTIR: Rochester Precision Optics (RPO)

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	BD6
As₄₀S₆₀	AMTIR-6		IRG 27

RefractiveIndex.INFO

Optical constants of SCHOTT - IRG
IRG 23

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula [ i ]

Comments

References

Data

Optical transmission calculator

Transmittance[ i ]

Reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

INFO

Infrared glass

Infrared glass types/brands from different makers

Cross-reference

External Links

Glass

External links

Optical constants of SCHOTT - IRGIRG 23

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula [ i ]

Comments

References

Data

Optical transmission calculator

Transmittance[ i ]

Reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

INFO

Infrared glass

Infrared glass types/brands from different makers

Cross-reference

External Links

Glass

External links

Optical constants of SCHOTT - IRG
IRG 23