Lowest-order optical nonlinearity in InSb: theory of dispersion near the band gap

Jha, Sudhanshu S. ; Wynne, James J. (1972) Lowest-order optical nonlinearity in InSb: theory of dispersion near the band gap Physical Review B, 5 (12). pp. 4867-4877. ISSN 0163-1829

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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.5.4867

Related URL: http://dx.doi.org/10.1103/PhysRevB.5.4867

Abstract

A model for the lowest-order optical nonlinearity in InSb is presented. A method for ensuring the cancellation of sizeable contributions throughout the Brillouin zone is incorporated in the model. A calculation, based on the band structure of InSb at k=0, successfully accounts for the dispersion of the optical nonlinearity near the band gap, measured by a second-harmonic-generation (SHG) experiment in InSb. General results are also presented on the interpretation of SHG measurements in absorbing media, with special attention devoted to interference experiments. From a comparison of the experimental dispersion with the theory, values are obtained for momentum matrix elements near k=0.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:14027
Deposited On:12 Nov 2010 09:21
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