Laser frequency combs for molecular fingerprinting

Author

Bernhardt, Birgitta ; Mandon, Julien ; Jacquet, Patrick ; Jacquey, Marion ; Ozawa, Akira ; Holzwarth, Ronald ; Guelachvili, Guy ; Hänsch, Theodor W. ; Picqué, Nathalie

Author_Institution

Max Planck Inst. fur Quantenopt., Garching, Germany

fYear

2009

fDate

4-8 Oct. 2009

Firstpage

619

Lastpage

620

Abstract

Measuring the beating signal between two phase-coherent frequency combs leads to a novel broadband spectroscopy, which improves a million-fold the resolution, the recording time and the accuracy of the frequency scale of Fourier transform spectroscopy, which has been up to now the most efficient technique for multiplex optical diagnostics. With a demonstrated thousand-fold enhancement of the absorption signal thanks to a high finesse cavity, the method proves promising for real-time detection of trace gases.

Keywords

Fourier transform spectroscopy; frequency measurement; laser variables measurement; Fourier transform spectroscopy; absorption signal; beating signal measurement; broadband spectroscopy; laser frequency combs; molecular fingerprinting; multiplex optical diagnostics; real-time detection; trace gases; Absorption; Fingerprint recognition; Fourier transforms; Frequency measurement; Gases; Optical recording; Phase measurement; Signal resolution; Spectroscopy; Time measurement; Ultrafast lasers; frequency metrology; spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

LEOS Annual Meeting Conference Proceedings, 2009. LEOS '09. IEEE

Conference_Location

Belek-Antalya

ISSN

1092-8081

Print_ISBN

978-1-4244-3680-4

Electronic_ISBN

1092-8081

Type

conf

DOI

10.1109/LEOS.2009.5343422

Filename

5343422