The Optical Spectra of the Arsenic Triselenide Crystal in the Range from 1 to 10 eV

Full complexes of fundamental optical functions of the As₂Se₃ single crystal in the region from 1 to 10 eV are calculated at 10 K (1–5.5 eV) and 77 K (5.5–10 eV) for three light polarizations (E a, E b, and E c). Their main characteristic features are established. The experimental reflection spectra and the spectra of other optical functions calculated on their basis are compared with the known literature data.