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Controlling the noncentrosymmetry of azodye-doped polymers by nonresonant dual-frequency coherent excitation.

Authors :
Si, Jinhai
Jinhai Si
Qiu, Jianrong
Jiangong Qiu
Hirao, Kazuyuki
Source :
Applied Physics Letters; 12/11/2000, Vol. 77 Issue 24
Publication Year :
2000

Abstract

All-optical control of the noncentrosymmetry of azodye-doped polymer films was demonstrated by nonresonant dual-frequency coherent excitation. The tensor analysis of the photoinduced noncentrosymmetry was performed by monitoring second harmonic generation (SHG) of the samples. The quadratic dependence of SHG on the film thickness showed that a χ[sup (2)] grating satisfying the phase-matching condition for SHG was optically induced in the polymer films, indicating this nonresonant all-optical poling can be used to tailor the symmetry of bulk samples. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Subjects

Subjects :
POLYMERS
THIN films

Details

Language :
English
ISSN :
00036951
Volume :
77
Issue :
24
Database :
Complementary Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
4413682
Full Text :
https://doi.org/10.1063/1.1332816