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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 21 — Nov. 1, 2012
  • pp: 4498–4500

Raman-induced Kerr-effect dual-comb spectroscopy

T. Ideguchi, B. Bernhardt, G. Guelachvili, T. W. Hänsch, and N. Picqué  »View Author Affiliations

Optics Letters, Vol. 37, Issue 21, pp. 4498-4500 (2012)

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We report on the first (to our knowledge) demonstration of nonlinear dual-frequency-comb spectroscopy. In multi-heterodyne femtosecond Raman-induced Kerr-effect spectroscopy, the Raman gain resulting from the coherent excitation of molecular vibrations by a spectrally narrow pump is imprinted onto the femtosecond laser frequency comb probe spectrum. The birefringence signal induced by the nonlinear interaction of these beams and the sample is heterodyned against a frequency comb local oscillator with a repetition frequency slightly different from that of the comb probe. Such time-domain interference provides multiplex access to the phase and amplitude Raman spectra over a broad spectral bandwidth within a short measurement time.

© 2012 Optical Society of America

OCIS Codes
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
(300.6450) Spectroscopy : Spectroscopy, Raman
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:

Original Manuscript: August 7, 2012
Revised Manuscript: September 21, 2012
Manuscript Accepted: September 22, 2012
Published: October 26, 2012

T. Ideguchi, B. Bernhardt, G. Guelachvili, T. W. Hänsch, and N. Picqué, "Raman-induced Kerr-effect dual-comb spectroscopy," Opt. Lett. 37, 4498-4500 (2012)

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