Effect of linear polarisability and local fields on surface SHG

C.M.J. Wijers, P.L. de Boeij, C.W. van Hasselt, Th. Rasing

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

A discrete dipole model has been developed to describe Surface Second Harmonic Generation by centrosymmetric semiconductors. The double cell method, which enables the linear reflection problem to be solved numerically for semi-infinite systems, has been extended for the nonlinear case. It is shown that a single layer of nonlinear electric dipoles at the surface and nonlocal effects allows to describe the angle of incidence dependent anisotropic SHG obtained from oxidised Si(001) wafers. The influence of the linear response, turns out to be essential to understand the anisotropic SHG-process.
Original languageEnglish
Pages (from-to)17-20
Number of pages4
JournalSolid state communications
Volume93
Issue number1
DOIs
Publication statusPublished - 1994

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