′�?, using a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful idea computations display which the residual absorption with the BGSe crystal https://baga4se7-crystal36790.blogocial.com/not-known-factual-statements-about-baga4se7-crystal-68310053