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Two-photon absorption in Ge: Band effects

Two-photon absorption in Ge: Band effects Calculations are reported of the two-photon absorption in germanium using a Kane band model. All bands within 10 eV of the valence-band edge are considered. The matrix elements are evaluated using k → · p → theory to find the relevant wave functions. The spherical model of Baldereschi and Lipari is used to treat the distinction between the light-hole and heavy-hole bands properly. Detailed calculations are made to test various approximations that simplify the evaluation of these complicated nonlinear optical coefficients. For Ge it is essential that the split-off band be included as an intermediate state and that the nonparabolicity of the conduction band be treated correctly. The results of the most complete calculation are in good agreement with experimental results. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Two-photon absorption in Ge: Band effects

Bryant, Garnett W
Physical Review B , Volume 22 (4) – Aug 15, 1980
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Publisher
American Physical Society (APS)
Copyright
Copyright © 1980 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.22.1992
Publisher site
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Abstract

Calculations are reported of the two-photon absorption in germanium using a Kane band model. All bands within 10 eV of the valence-band edge are considered. The matrix elements are evaluated using k → · p → theory to find the relevant wave functions. The spherical model of Baldereschi and Lipari is used to treat the distinction between the light-hole and heavy-hole bands properly. Detailed calculations are made to test various approximations that simplify the evaluation of these complicated nonlinear optical coefficients. For Ge it is essential that the split-off band be included as an intermediate state and that the nonparabolicity of the conduction band be treated correctly. The results of the most complete calculation are in good agreement with experimental results.

Journal

Physical Review B – American Physical Society (APS)

Published: Aug 15, 1980

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