[1] [1] YAO J Y, YIN W L, FENG K, et al. Growth and characterization of BaGa4Se7 crystal［J］. Journal of Crystal Growth, 2012, 346(1): 1-4.

[2] [2] GUO Y W, LI Z, LEI Z T, et al. Synthesis, growth of crack-free large-size BaGa4Se7 crystal, and annealing studies［J］. Crystal Growth & Design, 2019, 19(2): 1282-1287.

[4] [4] YAO J Y, MEI D J, BAI L, et al. BaGa4Se7: a new congruent-melting IR nonlinear optical material［J］. Inorganic Chemistry, 2010, 49(20): 9212-9216.

[5] [5] XU W T, WANG Y Y, XU D G, et al. High-pulse-energy mid-infrared optical parametric oscillator based on BaGa4Se7 crystal pumped at 1.064 μm［J］. Applied Physics B, 2017, 123(3): 1-6.