THz stimulated emission at interband transitions in HgTe/CdHgTe quantum wellsV.I. Gavrilenko, V.V. Rumyantsev, A.A. Dubinov, S.V. Morozov, N.N. Mikhailov, S.A. Dvoretsky, F. Teppe and C. SirtoriEPJ Web Conf., 195 (2018) 02001DOI: https://doi.org/10.1051/epjconf/201819502001