NDLI: Dual-Comb Architecture for Fast Spectroscopic Measurements and Spectral Characterization

Content Provider	IEEE Xplore Digital Library
Author	Martin-Mateos, P. Ruiz-Llata, M. Posada-Roman, J. Acedo, P.
Copyright Year	1989
Abstract	Optical frequency combs (OFCs) generated through the modulation of continuous-wave lasers offer higher power per component, simple comb spacing control, and lower complexity and cost than traditional OFCs. By these reasons, they are an interesting optical source for spectrometers. In this letter, a dual-comb architecture based on two OFCs generated from the same laser using optical phase modulators is presented. The system features a new placement for the spectroscopic sample that increases the versatility, robustness, and stability of the instrument without requiring any reconfiguration for carrying out different types of measurement. Besides this, a self-referenced detection setup based on digital phase sensitive multitone detection improves the SNR of the previous approaches offering more flexibility in its configuration and high data output rate. The proposed architecture is validated by measuring a ro-vibrational absorption feature of HCN at 1544.51 nm and characterizing the spectral response of a fiber-coupled Fabry-Perot filter.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1309
Ending Page	1312
Page Count	4
File Size	348271
File Format	PDF
ISSN	10411135
Volume Number	27
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-15
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fibers Optical mixing Optical filters Optical sensors Radio frequency Frequency modulation fast spectroscopy Optical frequency comb heterodyne detection optical mixing
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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