Fourier transform spectrometer with a frequency comb light...

G - Physics – 01 – J

Patent

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G01J 3/453 (2006.01)

Patent

CA 2731301

The invention relates to a Fourier transform spectrometer (1 ) comprising: a coherent light source (2); an interferometer (4) adapted to separate the coherent light source into two or more parts in order to generate through frequency- or phase-induced effects, interferences between the two or more parts; detection means (5) adapted to detect the interferences, wherein the coherent light source comprises a frequency comb generator (2) having a frequency repetition rate, and the detection means are adapted to detect the beating of pairs of frequencies of the frequency comb separated by the frequency repetition rate or a multiple of the frequency repetition rate.

La présente invention concerne un spectromètre à transformée de Fourier (1) comprenant : une source de lumière cohérente (2); un interféromètre (4) conçu pour séparer la source de lumière cohérente en deux parties ou plus dans le but de générer, par des effets dinduction de fréquence ou de phase, des interférences entre les deux parties ou plus; et des moyens de détection (5) conçus pour détecter les interférences, la source de lumière cohérente comprenant un générateur en peigne de fréquences (2) présentant un taux de répétition de fréquence, et les moyens de détection étant conçus pour détecter le battement de deux fréquences du peigne de fréquences séparé par le taux de répétition de fréquence ou un multiple de ce taux.

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