14:30 〜 14:45 ▲ [19p-A402-5] Simulation of optical gain for GaN terahertz quantum cascade lasers by usingnon-equilibrium Green’s function method 〇KE WANG1、Tsung-Tse Lin1、Li Wang1、Joosun Yun1、Hideki Hirayama1 (1.RIKEN)