′�?, having a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical idea computations show that the residual absorption on the https://baga4se7crystal05937.smblogsites.com/32448009/helping-the-others-realize-the-advantages-of-baga4se7-crystal