Thermophysical properties of lithium thiogallate that are important for optical applications.

ABSTRACT: Lithium thiogallate LiGaS₂ is one of the most common nonlinear crystals for mid-IR due to its extreme beam strength and wide transparency range; however, its thermophysical properties have not yet been practically studied. Large crystals of high optical quality are grown. DTA revealed features at 1224 K below melting point (1304 K) that are associated with the oxygen containing compounds of the LiGaO_2-x S _x type. The thermal conductivity of LiGaS₂ (about 10.05 W (m^-1 K^-1)) and band gap value (3.93 eV at 300 K) are found to be the highest in the LiBC₂ family. Isotropic points in the dispersion characteristics for the refractive index are found and LiGaS₂-based narrow-band optical filters, s

SUBMITTER: Kurus A 

PROVIDER: S-EPMC9044440 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature