Corrections to enhanced optical nonlinearity of superlattices

Title:
Corrections to enhanced optical nonlinearity of superlattices
Creator:
Cooperman, Gene D. (Author)
Friedman, L. (Author)
Bloss, W. L. (Author)
Language:
English
Copyright date:
1984
Type of resource:
Text
Genre:
Articles
Format:
electronic
Digital origin:
born digital
Abstract/Description:
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.
Comments:
The following article appeared in Applied Physics Letters 44, 977 (1984) and may be found at http://dx.doi.org/10.1063/1.94618.
Subjects and keywords:
Superlattices as materials
Nonlinear optics
nonlinear optics
gallium arsenides
aluminium arsenides
superlattices
optical susceptibility
thin films
Semiconductor and Optical Materials

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