Excitonic effects on optical second-harmonic polarizabilities of semiconductors

Eric K. Chang; Eric L. Shirley; Zachary H. Levine

doi:10.1103/PhysRevB.65.035205

Excitonic effects on optical second-harmonic polarizabilities of semiconductors

Eric K. Chang, Eric L. Shirley, and Zachary H. Levine

Phys. Rev. B 65, 035205 – Published 13 December 2001

Abstract

We present an ab initio many-body formalism for computing the frequency-dependent second-harmonic polarizability of semiconductor materials that includes both local-field and excitonic effects. We calculate the second-harmonic polarizability for AlP, AlAs, GaP, and GaAs. In each case, excitonic effects increase the value of the second-harmonic polarizability by about 20%.

Received 20 August 2001

DOI:https://doi.org/10.1103/PhysRevB.65.035205

Authors & Affiliations

Eric K. Chang, Eric L. Shirley, and Zachary H. Levine

National Institute of Standards and Technology, Gaithersburg, Maryland 20899

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Issue

Vol. 65, Iss. 3 — 15 January 2002

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