TERAHERTS RADIATION DETECTOR BASED ON THIN-FILM THERMOELECTRIC STRUCTURES OF BISMUTH AND ANTIMONY Russian patent published in 2023 - IPC H10N10/00 H01L31/113 H01L31/18 

FIELD: optical engineering.

SUBSTANCE: terahertz (THz) radiation detectors, can be used for broadband detection of pulsed or continuous THz radiation or measurement of its power. The structure of the detector uses a thermoelectric material with high sensitivity to radiation in the THz frequency range, and it is proposed to use thermoelectric branches made of a thin film of the bismuth-antimony Bi_1-xSb_x solid solution as a sensitive thermoelectric element.

EFFECT: providing the possibility of highly sensitive detection of continuous and pulsed THz radiation with a power of up to 500 mW at temperatures from -10°C to +50°C in frequency range 0.1÷10 THz with a sensitivity of at least 30 mV/W, equivalent noise power of at least 0.15 nW⋅Hz^-1/2, response time no more than 20 μs, modulation frequency 1÷40 Hz.

9 cl, 3 dwg