Lowest-Order Optical Nonlinearity in InSb: Theory of Dispersion near the Band Gap

Sudhanshu S. Jha and James J. Wynne
Phys. Rev. B 5, 4867 – Published 15 June 1972
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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.

  • Received 6 March 1972

DOI:https://doi.org/10.1103/PhysRevB.5.4867

©1972 American Physical Society

Authors & Affiliations

Sudhanshu S. Jha* and James J. Wynne

  • IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598

  • *Permanent address: Tata Institute of Fundamental Research, Bombay-5, India.

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Issue

Vol. 5, Iss. 12 — 15 June 1972

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