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The principles of constructing optical devices on the basis of diffractive structures with a vanadium dioxide film for the control of radiation in the mid-IR range are analyzed. Methods are described for the practical implementation of such devices at λ=10.6 µm, and their response characteristics are calculated. It is shown that a contrast of 1:10 7 can be attained in diffractive optical elements, and the actuation time of the elements when switched on by an intense laser beam can be shortened to tens of nanoseconds.
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Danilov et al. (1999) studied this question.
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