[23a-E102-1~8] FS.1 Focused Session "AI Electronics"

[23a-E102-3] Optimization of Active Layer in Quantum Cascade Laser using coupled simulation of Non-Equilibrium Green's Function and Genetic Algorithm (GA)

〇Shigeyuki Takagi¹, Hirotaka Tanimura¹, Tsutomu Kakuno², Rei Hashimoto², Kei Kaneko², Shinji Saito² (1.TUT Univ., 2.TOSHIBA Corp.)

Keywords:quantum cascade laser, non-equilibrium Green's function, genetic algorithm

The quantum cascade laser QCL is a semiconductor laser that can obtain light from the infrared region to the THz region. The wavelength and efficiency of the laser are determined by the film structure of the Active layer that forms the quantum well, and its optimization is important. Nextnano.QCL incorporating a non-equilibrium Green's function was used for the gain calculation of the laser oscillation, and modeFRONTIER was used for the optimization by the genetic algorithm, and both were combined for optimization. After 1000 optimization calculations, an optimization structure was obtained that increased the gain from 50.01 to 78.44 cm-1.