The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2022
Filed:
Aug. 24, 2020
Irsweep Ag, Stäfa, CH;
Empa Eidgenössische Material Prüfungs—und Forschungsanstalt, Dübendorf, CH;
Michele Gianella, Dübendorf, CH;
Andreas Hugi, Zurich, CH;
Markus Mangold, Zurich, CH;
Akshay Nataraj, Zurich, CH;
Lukas Emmenegger, Dübendorf, CH;
IRsweep AG, Stafa, CH;
EMPA EIDGENÖSSISCHE MATERIAL PRÜFUNGS—UND FORSCHUNGSANSTALT, Dubendorf, CH;
Abstract
A dual-comb spectrometerwith two lasersserving as a local oscillator and an interrogator. The lasers output light beams with respective frequency combs C, Cof defined free spectral range, FSR. A detectorcan detect heterodyne mixing of the combined beams to detect an RF frequency comb C. Respective control signals are supplied to the lasers which have functional forms configured to cause the frequencies of the lasers' frequency combs C, Cto tune over a defined fraction of their FSR. This enables a reduction of the effective spectral sampling period by a factor equal to the ratio of the FSR to the spectral resolution of the spectrometer, which will typically be several orders of magnitude, so that the spectral sampling period can be reduced from the GHz to the MHz range, which in turn enables a gapless spectrum to be obtained in a short time.