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N. V. Kamanina^1,2,3*, A. S. Toikka^1,2,3, G. N. Zvereva⁴, P. V. Kuzhakov^1,3, Ya. V. Barnash^2,3, S. A. Tarasov²

Author affiliations
¹Vavilov State Optical Institute, Saint- Petersburg, Russia
Scientific and Production Association «Vavilov State Optical Institute», Saint- Petersburg, Russia
²Saint-Petersburg Electrotechnical University («LETI»), Saint-Petersburg, Russia
³SRC “Kurchatov Institute – Petersburg Institute of Nuclear Physics, Gatchina, Russia
⁴Saint-Petersburg University of Civil Aviation, Saint-Petersburg, Russia
*Corresponding author: nvkamanina@mail.ru

Abstract
Various surface reliefs of thin-film polyimide compositions structured by different methods using UV and IR radiation are considered for subsequent recommendations of their application in the light- and electro-addressable liquid crystalline spatiotemporal light modulators. Spectral measurements were carried out and contact wetting angles of the structured surface were determined. The atomic force analysis of the structured surface was also performed. Based on the obtained data, it is proposed that the performed product developments can be effectively used for the design of laser radiation modulators and converters, in which a liquid crystalline mesophase functions as an electro-optical modulating layer.

Keywords: оrganic materials, polyimide layers, laser interaction in the UV and IR-spectral range, surface relief, wettability