INVESTIGATION OF CHARACTERISTICS OF THICK DIFFRACTION GRATINGS BY THE METHOD OF LASER HETERODYNE TOMOGRAPHY
P. E. Tverdokhleb, Yu. A. Shchepetkin, I. Sh. Steinberg
Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, prosp. Akademika Koptyuga, 1
Keywords: лазерная гетеродинная томография, амплитудно-фазовая дифракционная решётка, коллинеарный гетеродинный фотодетектор, акустооптическое сканирование решётки, дифракционная эффективность, амплитудная и фазовая составляющие решётки, laser heterodyne tomography, amplitude-phase diffraction grating, collinear heterodyne photodetector, acousto-optical scanning of the grating, diffraction efficiency, amplitude and phase components of the grating
Abstract
A procedure of layer-by-layer investigations of characteristics of thick amplitude-phase gratings by the method of laser heterodyne tomography is presented. The parameters of a thick grating nonlinearly written on an additively colored crystal of calcium fluoride (CaF2:Na) are estimated. The main theoretical postulates of laser heterodyne tomography are experimentally validated
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