MODULATOR OF INFRARED RADIATION

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Useful model relates down the optical electronics. Modulator contains the working optical element, made from the composition mixture of the powder of the manganite Of a1-[khVkhM]n[O]3, which possesses the effect of magnetotransmission near the Curie temperature, before which the trivalent rare-earth metal A, as which are used the elements La, Pr, Nd or the combinations of these metals, is partially substituted [odnoili] by the bivalent metal B, as which are used Na, K, Ag, Ca, Sr, Ba, by Pb, with the substitution rate of [kh]≤0.5, undertaken before quantity 0.1-10 [mas].%, and the dielectric, transparent in the infrared region, undertaken before a remaining quantity. The powder of the manganite Of [a]1-[khVkhM]n[O]3 based on [kh]≤0.5 has grain size from 100 nm to 20 m. The powder of the manganite Of a1-[khVkhM]n[O]3 based on x=0.5 has grain size from 10 to 100 nm. As the dielectric, transparent in the infrared region, are used KBr, CsI, or IR glass. Technical result - expansion of the arsenal of the modulators OF IR emission, that work on the effect of magnetotransmission before the manganites, and so reduction of prices and simplification in the magneto-optical3 [z].[p]., 6 illus.