Hyper-Rayleigh scattering as a probe of quasistatic lattice distortions in nominally pure KTaO 3

1 July 1990

journal article
Published by Taylor & Francis in Ferroelectrics

Vol. 107 (1) , 79-84
https://doi.org/10.1080/00150199008221517

Abstract

The integral intensity of second-harmonic light or hyper-Rayleigh scattering from nominally pure KTaO₃ is measured as a function of both scattering geometry and temperature between 10 and 200 K. Evidence is found that hyper-Rayleigh scattering results from an activation of the soft-mode hyper-Raman tensor by quasistatic lattice distortions and macroscopic electric fields.

Keywords

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