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Journal of the Optical Society of America B

Nonlinear optical properties in AlGaAs/GaAs symmetric coupled quantum wells

Ruixia Ti, Chaoyang Wang, Guanghui Wang

Published May 25, 2021• 2 citations
Publisher

Abstract

Based on the density matrix approach and iterative method, we calculated the analytic forms of linear and third-order nonlinear optical absorption coefficients and refractive index changes for symmetric coupled quantum wells (SCQWs) considering a two-level system, and gave the corresponding numerical results. The calculated results show that the optical properties of SCQWs are significantly better than those of asymmetrically coupled quantum wells, and the optical absorption coefficient and refractive index change are affected by the structure parameters of the SCQWs and the incident optical intensity. Their physical mechanisms are elucidated.

DOI
10.1364/josab.419532

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