The nature of some nonlinear optic coefficients in ferroelectrics
Document Type
Article
Publication Date
1-1-2001
Abstract
Nonlinear optic coefficients that have been calculated through the resonant region in the far-infrared are looked at. It is possible to make such calculations by using a systematic expansion based on the Landau-Devonshire expression for the free energy together with the Landau-Khalatnikov dynamical equations. In this paper the coefficients considered have been calculated for an isotropic paraelectric phase. Two third order examples are presented: third harmonic generation and the d.c. Kerr effect. Experimental and practical implications include those for far-infrared sources and Terrahertz wave technology.
Keywords
Far infrared, Ferroelectric materials, Nonlinear optics, Films
Divisions
PHYSICS
Publication Title
Ferroelectrics
Volume
251
Issue
1-4
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA