Second-harmonic generation in an optically poled azo-dye/polymer film.
The power dependence of the optical poling process of a new azo chromophore in the polymethylmethacrylate matrix at room temperature has been investigated. The existing theory is found to be inconsistent with the experiment. A simple model based on the rate equation is proposed to describe the writing process of the chromophore/polymer system. The measured growth rate and the plateau second-harmonic generation intensity as induced by all optical poling are found to be in good agreement with the prediction of the simple model.
Wang
Yuxiao
Y
Center of Organic Materials for Advanced Technology and Department of Physics, National Sun Yatsen University, Kaohsiung, Taiwan 80424.
Tai
Oliver Y-H
OY
Wang
C H
CH