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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 4 — Feb. 15, 2012
  • pp: 638–640

Direct-comb molecular spectroscopy with accurate, resolved comb teeth over 43 THz

A. M. Zolot, F. R. Giorgetta, E. Baumann, J. W. Nicholson, W. C. Swann, I. Coddington, and N. R. Newbury  »View Author Affiliations


Optics Letters, Vol. 37, Issue 4, pp. 638-640 (2012)
http://dx.doi.org/10.1364/OL.37.000638


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Abstract

We demonstrate a dual-comb spectrometer using stabilized frequency combs spanning 177 to 220THz (1360 to 1690nm) in the near infrared. Comb-tooth-resolved measurements of amplitude and phase generate over 4×105 individually resolved spectral elements at 100MHz point spacing and kilohertz-level resolution and accuracy. The signal-to-noise ratio is 100 to 3000 per comb tooth. Doppler-broadened phase and amplitude spectra of CO2, CH4, C2H2, and H2O in a 30m multipass cell agree with established spectral parameters, achieving high-resolution measurements with optical bandwidth generally associated with blackbody sources.

OCIS Codes
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Spectroscopy

History
Original Manuscript: November 3, 2011
Revised Manuscript: December 23, 2011
Manuscript Accepted: December 24, 2011
Published: February 10, 2012

Citation
A. M. Zolot, F. R. Giorgetta, E. Baumann, J. W. Nicholson, W. C. Swann, I. Coddington, and N. R. Newbury, "Direct-comb molecular spectroscopy with accurate, resolved comb teeth over 43 THz," Opt. Lett. 37, 638-640 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-4-638

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