INFRARED AND THZ RADIATION OPTICAL ACOUSTIC RECEIVER Russian patent published in 2021 - IPC G01J5/42 

FIELD: measuring technology.

SUBSTANCE: invention relates to measuring technology and concerns an infrared and THz radiation optical acoustic receiver. The receiver comprises a body which comprises a system of two gas-filled expansion chambers and a compensation chamber connected by an expansion capillary channel. A collodium film with a through porosity is arranged inside the expansion chamber, said film being provided with a metal absorbing element applied thereto in the form of a thin metal film with a low thermal capacity. The expansion chamber is separated from the compensation chamber by a flexible current-conducting gas-tight membrane. The flexible membrane together with the fixed flat metal plate, which is arranged in the compensation chamber, form a dynamic condenser. A thin metal layer is additionally sprayed in the receiver in the form of a contact ring framing the flexible membrane in such a way that the expansion chamber can be sealed, and a flexible current-conducting gas-tight membrane is in the form of a single-layer graphene.

EFFECT: technical result consists in increasing speed and sensitivity when measuring the flow of electromagnetic radiation.

1 cl, 1 dwg