Second Harmonic Generation in LiNbO sub 3 Crystals with Periodic Laminar Ferroelectric Domains

摘要

The second harmonic generation of light in LiNbO sub 3 crystals with periodic laminar ferroelectric domains was investigated, in order to make a detailed experimental verification of the theory of quasi-phase-matching proposed by N. Bloembergen et al. First, we determined the second harmonic light intensity of single domain LiNbO sub 3 crystals in the scheme e/sup omega/ . e/sup omega/ yields e/sup 2 omega/ using the Maker tracing method to carry out a direct experimental measurement. Then, by using the angle-scanning and temperature-scanning methods, we obtained the maximum second harmonic output from crystals with periodic domains corresponding. (ERA citation 09:031274)