′�?, with a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−one phonon corresponds on the crystal IR absorption edge, instead of the residual absorption peak. Density useful concept computations demonstrate that the residual absorption of the BGSe crystal https://baga4se7-crystal63962.ja-blog.com/32849152/5-tips-about-baga4se7-crystal-you-can-use-today