Optical constants of GaAs (Gallium arsenide)
Franta et al. 2026: n,k 0.952–400 µm; 440 K
Complex refractive index (n+ik)
Derived optical constants
Conditions
temperature: 440
Comments
Undoped GaAs. Heterogenous data processing combining ellipsometric and spectrophotometric measurements with previously published refractive index. Temperature 440 K.
References
D. Franta, B. Hroncová, M. Muresan, S. Zollner. Dispersion models describing coupled systems in doped crystals. II. Infrared phonon excitations in GaAs single crystals and phonon-plasmon coupling in Zn-doped GaAs. J. Appl. Phys. 139, 175704 (2026) (Numerical data kindly provided by Daniel Franta)
Data
Additional information
About Gallium arsenide
Gallium arsenide (GaAs) is a compound semiconductor material that holds a prominent position in the world of optoelectronics and high-frequency electronics. With a direct bandgap of approximately 1.43 eV, GaAs is highly efficient for radiation recombination, making it ideal for a range of applications such as solar cells, lasers, and light-emitting diodes (LEDs). It offers superior electron mobility compared to silicon, which allows for faster electronic devices and is widely used in applications requiring high-frequency operation like in microwave and millimeter-wave technologies. GaAs is commonly grown using methods such as molecular beam epitaxy (MBE) or metal-organic chemical vapor deposition (MOCVD). While it's more costly to produce than silicon, the material's superior electronic and optoelectronic properties often justify the additional expense in specialized applications.
Other names and variations:- GaAs
- Gallium(III) arsenide