https://doi.org/10.1140/epjd/s10053-021-00319-w
Regular Article – Quantum Optics
Optical absorption coefficients dependence on well parameter of a coupled quantum well
1
School of Physics and Electronic Engineering, Jiangsu Normal University, 221116, Xuzhou, China
2
Department of Physics, College of Physics and Optoelectronics, Taiyuan University of Technology, 030024, Taiyuan, Shanxi, China
b
chaojinzhang@163.com
c
chenbin@tyut.edu.cn
Received:
15
October
2021
Accepted:
30
November
2021
Published online:
21
December
2021
The influence of the tunable well parameters on the optical absorption coefficients is theoretically studied in a coupled quantum well structure. It is shown that the transition matrix elements and the energy level differences will depend on the well parameters, which further induces the nonlinear absorption coefficients greatly enhancing. Importantly, the total absorption coefficients greatly increase because the inversion symmetry of the coupled quantum well was broken by adjusting well parameters. Moreover, with the incident laser intensity increasing, the total absorption coefficients will gradually decrease, finally resulting in the bleaching effect.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
