The effect of position-dependent mass on nonlinear optical absorption coefficients and refractive index changes in a quantum well

Abstract:

The influence of position-dependent mass (PDM) on nonlinear optical absorption (OA) coefficients and refractive index changes (RICs) is theoretically studied, within the framework of the iterative method and the compact-density-matrix approach. Through solving Schrödinger equation, the eigenfunctions and energy eigenvalues are obtained. The analytic expressions of the optical absorption coefficients and the refraction index changes are derived theoretically. The results reveal that the OA coefficients and the RICs are strongly affected by PDM, and both the peaks of them increase when considering PDM.

Año de publicación:

2017

Keywords:

• refractive index changes
• Optical absorption coefficients
• Position-dependent mass

Fuente:

scopus