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.
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
Permanent URL
Recommended Citation
Cooperman, Gene D.; Friedman, L.; and Bloss, W. L., "Corrections to enhanced optical nonlinearity of superlattices" (1984). Computer and Information Science Faculty Publications. Paper 14. http://hdl.handle.net/2047/d20000659
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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.