′�?, with a frequency of 295 cm−1, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−1 phonon corresponds to your crystal IR absorption edge, as opposed to the residual absorption peak. Density useful idea computations present that the residual absorption of the BGSe https://baga4se7crystal43063.blogminds.com/5-tips-about-baga4se7-crystal-you-can-use-today-29993347