DETERMINATION OF THE CHROMOPHOR-POLYMER FILM POLING CONDITIONS IN THE CORONA DISCHARGE FIELD BY MEASURING THE SECOND HARMONIC GENERATION SIGNAL
V. V. Shelkovnikov1,2, E. V. Vasilyev1, N. V. Vasilyeva1, S. V. Korotaev1, I. Yu. Kargapolova1, N. A. Orlova1
1N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: полинг, полимерная система В«гость-хозяинВ», генерация второй гармоники, электрооптический материал, poling, guest-host chromophore-polymer system, second harmonic generation, electro-optical material
Abstract
The conditions of the corona discharge poling of micron guest-host polycarbonate films containing a donor-acceptor dye (polyfluorotriarylpyrazoline-dicyanoisophorone) are determined to create an effective orientation of chromophore molecules. The experiments are carried out using the created triode poling experimental setup with continuous monitoring of the second harmonic generation (SHG) signal from the polymer film directly during the corona poling process. The SHG signal is induced in samples from the first harmonic of a 1064-nm pulsed Nd:YAG laser monitoring the chromophore molecule orientation in the polymer film stimulated by the corona discharge field. The dependences of the SHG signal on the potential of the grid and the needle electrode of the triode system are measured.
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