Upconversion luminescence of CaF2-SrF2-ErF3 single crystals upon 1.5 µm laser excitation / Journal of Physics: Conference Series. (SPbOPEN 2019)  2019. 1410. 012086

A.A. Lyapin, A.S. Ermakov, S.V. Kuznetsov, S.V. Gushchin, P.A. Ryabochkina, V.A. Konyushkin, A.N. Nakladov, P.P. Fedorov. Upconversion luminescence of CaF2-SrF2-ErF3 single crystals upon 1.5 µm laser excitation / Journal of Physics: Conference Series. (SPbOPEN 2019)  2019. 1410. 012086