ENHANCEMENT OF 2ND-HARMONIC POWER DUE TO SELF-CONSTRUCTION OF AN ANTI-GUIDE STRUCTURE IN A THIN-FILM WAVE-GUIDE OF A NONLINEAR-OPTICAL PHOTOCONDUCTING POLYMER

Authors
Citation
T. Sassa et S. Umegaki, ENHANCEMENT OF 2ND-HARMONIC POWER DUE TO SELF-CONSTRUCTION OF AN ANTI-GUIDE STRUCTURE IN A THIN-FILM WAVE-GUIDE OF A NONLINEAR-OPTICAL PHOTOCONDUCTING POLYMER, JPN J A P 2, 37(4B), 1998, pp. 447-449
Citations number
8
Categorie Soggetti
Physics, Applied
Volume
37
Issue
4B
Year of publication
1998
Pages
447 - 449
Database
ISI
SICI code
Abstract
A theoretical analysis, to explain the increase of the Cerenkov-radiat ion-type second-harmonic power with time in a thin-film waveguide of a nonlinear-optical photoconducting polymer, is given. An anti-guide st ructure, which confines both a fundamental wave and its second-harmoni c wave, is gradually constructed by reorientation of the nonlinear-opt ical chromophores within the fundamental beam width in the thin-film p olymer. The space-charge field formed by the initially weak second-har monic wave itself causes the reorientation.