Abstract

In recent publications, a large enhancement of the third order nonlinear optical susceptibility was predicted for GaAs-GaAIAs superlattices, as a result of the band nonparabolicities introduced by the additional periodicity of the superlattice. These predictions, based on the tight binding model, are here extended to the more realistic Kronig-Penney model. Results show that corrections to tight binding are non-negligible; however, enhancements of χ⁽³⁾ are still large, but reduced by approximately 30%-50% over previous estimates.

Notes

The following article appeared in Applied Physics Letters 44, 977 (1984) and may be found at http://dx.doi.org/10.1063/1.94618.

Keywords

nonlinear optics, gallium arsenides, aluminium arsenides, superlattices, optical susceptibility, thin films

Subject Categories

Superlattices as materials, Nonlinear optics

Disciplines

Semiconductor and Optical Materials

Publication Date

5-15-1984

Rights Information

Copyright 1984

Restrictions

This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Rights Holder

American Institute of Physics

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