Optimization of Active Region of Quantum Cascade Laser (QCL) by Coupled Calculation of Genetic Algorithm and QCL Simulator

Shigeyuki Takagi, Tsutomu Kakuno, Rei Hashimoto, Kei Kaneko, Shinji Saito

2024

Abstract

We applied a coupled calculation of genetic algorithm and a quantum cascade laser (QCL) simulator (nextnano.QCL) to calculate the gain that excites laser light in the active region of the QCL. The film thicknesses of the nine layers constituting the active region were changed simultaneously, and the film structure with the maximum gain was determined from 1000 type of film structures. The QCL simulator incorporating a non-equilibrium Green’s function was used to calculate the gain of the QCL, and the validity of the simulation was evaluated using the active region structure reported in the previous paper. In the coupled calculation of the QCL simulator and genetic algorithms, we used gain as an objective function and methods of crossing, natural selection, and mutation simulating the evolutionary process of living organisms to optimize the thickness of nine films. As a result of the optimization calculation, the optimized structure had gain (78.44 cm–1 ) higher than that (50.01 cm–1 ) in a structure reported in a previous paper.

Paper Citation

in Harvard Style

Takagi S., Kakuno T., Hashimoto R., Kaneko K. and Saito S. (2024). Optimization of Active Region of Quantum Cascade Laser (QCL) by Coupled Calculation of Genetic Algorithm and QCL Simulator. In Proceedings of the 12th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS; ISBN 978-989-758-686-6, SciTePress, pages 72-77. DOI: 10.5220/0012428200003651

in Bibtex Style

@conference{photoptics24,
author={Shigeyuki Takagi and Tsutomu Kakuno and Rei Hashimoto and Kei Kaneko and Shinji Saito},
title={Optimization of Active Region of Quantum Cascade Laser (QCL) by Coupled Calculation of Genetic Algorithm and QCL Simulator},
booktitle={Proceedings of the 12th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS},
year={2024},
pages={72-77},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012428200003651},
isbn={978-989-758-686-6},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 12th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS
TI - Optimization of Active Region of Quantum Cascade Laser (QCL) by Coupled Calculation of Genetic Algorithm and QCL Simulator
SN - 978-989-758-686-6
AU - Takagi S.
AU - Kakuno T.
AU - Hashimoto R.
AU - Kaneko K.
AU - Saito S.
PY - 2024
SP - 72
EP - 77
DO - 10.5220/0012428200003651
PB - SciTePress