Nonlinear Optical Properties of a Quantum Well With Short-Range Bottomless Exponential Potential
Abstract
In the present study, the effect of the depth of the confinement
potential on the nonlinear optical of a GaAs quantum well with short-range
bottomless exponential potential is studied in detail. The energy eigenvalues
and eigenfunctions of this structure are calculated within the framework of
effective mass and envelope function approximations. Analytic formulas for the
linear, third-order nonlinear and total absorption coefficients and relative
refractive index changes are obtained using the compact-density matrix approach
(CDMA) and iterative method. Based on this model, our obtained numerical
results are reported as a function of incident photon energy for several values
of the depth of the confinement potential. The results show that the linear,
third order nonlinear, and total absorption coefficients and relative
refractive index changes are strongly affected by the depth of the confinement
potential.
Keywords
References
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