′�?, by using a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds towards the crystal IR absorption edge, rather then the residual absorption peak. Density useful concept computations display that the residual absorption of your BGSe https://baga4se7-crystal75174.daneblogger.com/31931484/a-secret-weapon-for-baga4se7-crystal