Raman-induced Kerr-effect dual-comb spectroscopy

T. Ideguchi, B. Bernhardt, G. Guelachvili, T. W. Hänsch, N. Picqué

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)4498-4500
Number of pages3
JournalOptics Letters
Issue number21
Publication statusPublished - 1 Nov 2012
Externally publishedYes


  • Spectroscopy, Fourier transforms
  • Spectroscopy, Raman
  • Ultrafast lasers
  • Emission spectroscopy
  • Four wave mixing
  • Frequency combs
  • Molecular spectroscopy
  • Stimulated Raman scattering
  • Sum frequency generation

Fields of Expertise

  • Advanced Materials Science

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