Refractive index of AlAs-GaAs (Aluminium gallium arsenide, AlGaAs)

Optical constants of AlAs-GaAs (Aluminium gallium arsenide, AlGaAs)
Gadras et al. 2025: n,k 0.450–1.40 µm; 90% Al, 600 °C

Wavelength: µm

(4.502291e-01–1.300151e+00)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Conditions

temperature: 873

Comments

Al_xGa_1-xAs; x=0.92; 600 °C

References

P. Gadras, L. Bourdon, A. Fées, K. Ben Saddik, A. Guilhem, A. Arnoult. Optical refractive index measurements of AlGaAs at high temperature for fully automated molecular beam epitaxy growth of Bragg mirrors. J. Phys. D: Appl. Phys. 58, 0022-3727 (2025) (Numerical data kindly provided by Pierre Gadras)

Data

[CSV - comma separated] [TXT - tab separated] [Full database record]

Optical transmission calculator

Wavelength: µm
Thickness:
Calculation method: [ i ]

Sample transmittance and reflectance

Transmittance of a freestanding sample in vacuum

T =

Reflectance of a freestanding sample in vacuum

R =

Fresnel 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 = °

Additional information

About Aluminium gallium arsenide

Other names and variations:

AlGaAs
Aluminum gallium arsenide

Links:

RefractiveIndex.INFO

Optical constants of AlAs-GaAs (Aluminium gallium arsenide, AlGaAs)
Gadras et al. 2025: n,k 0.450–1.40 µm; 90% Al, 600 °C

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 ]

Conditions

Comments

References

Data

Optical transmission calculator

Sample transmittance and reflectance

Transmittance of a freestanding sample in vacuum

Reflectance of a freestanding sample in vacuum

Fresnel reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

Additional information

About Aluminium gallium arsenide

Optical constants of AlAs-GaAs (Aluminium gallium arsenide, AlGaAs)Gadras et al. 2025: n,k 0.450–1.40 µm; 90% Al, 600 °C

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 ]

Conditions

Comments

References

Data

Optical transmission calculator

Sample transmittance and reflectance

Transmittance of a freestanding sample in vacuum

Reflectance of a freestanding sample in vacuum

Fresnel reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

Additional information

About Aluminium gallium arsenide

Optical constants of AlAs-GaAs (Aluminium gallium arsenide, AlGaAs)
Gadras et al. 2025: n,k 0.450–1.40 µm; 90% Al, 600 °C