1987/04/30 by W Kucharczyk, W. Kucharczyk
Materials Science · Physics and Astronomy · #Nonlinear Optical Materials Research #Photorefractive and Nonlinear Optics #Solid-state spectroscopy and crystallography
paper · doi:10.1088/0022-3719/20/12/015
crossref issued 1987/04/30 · crossref published 1987/04/30 · crossref published-print 1987/04/30 · openalex publication_date 1987/04/30 · crossref published-online 2000/11/22 · crossref created 2002/07/26 · crossref deposited 2020/04/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30 · crossref indexed 2026/08/03
Calculations of the ionic contribution to the primary quadratic electro-optic coefficients, based on the Phillips-Van Vechten theory (1969) and the bond-charge model, are presented. Three contributions, namely a stretching of the bond, a rotation of the bond direction and a displacement of the bond charge, are shown to give comparable changes in the refractive index. The calculated results agree with the experimental data.