Terahertz optical gate

G - Physics – 02 – F

Patent

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G02F 1/19 (2006.01)

Patent

CA 2582448

The invention concerns a wideband optical gate in the domain of terahertz (far infrared wavelengths). It comprises a first optical source (2) emitting a first beam (FTHz) in said terahertz domain, a first semiconductor material plate (1) illuminated by said terahertz beam and a second optical source (3) emitting a second beam (FIR) at a wavelength enabling the first semiconductor material plate (1) to be saturated and rendered reflecting at the terahertz wavelength. The invention also concerns a system for measuring terahertz signals as well as a terahertz generator. The invention is applicable to systems for measuring terahertz signals and terahertz generators.

L'invention concerne une porte optique large bande dans le domaine des terahertz (longueurs d'ondes de l'infrarouge lointain). Elle comporte une première source optique (2) émettant un premier faisceau (FTHz) dans ledit domaine des terahertz, une première lame en matériau semiconducteur (1) éclairée par ledit faisceau terahertz et une deuxième source optique (3) émettant un deuxième faisceau (FIR) à une longueur d'onde permettant de saturer la première lame (1) en matériau semiconducteur et de la rendre réflectrice au longueur d'onde terahertz. L'invention concerne également un système de mesure de signaux terahertz ainsi qu'un générateur terahertz. Elle s'applique notamment aux systèmes de mesure de signaux terahertz et aux générateurs terahertz.

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