Molecular spectroscopy with laser frequency combs (Dr. N. Picqué)

  • Datum: 05.06.2018
  • Uhrzeit: 14:30 - 15:30
  • Vortragender: Dr. Nathalie Picqué
  • MPQ, Emeritus Group Laser Spectroscopy
  • Raum: New Lecture Hall, Room B 0.32
  • Gastgeber: MPQ
Almost twenty years ago, optical frequency combs – spectra made of millions of phase-coherent evenly spaced narrow laser lines – have revolutionized time and frequency measurements.

Frequency combs are now finding applications far beyond the initial purpose. In particular, laser comb generators are becoming powerful instruments for broadband molecular sensing and they create new opportunities for multiplex nonlinear spectroscopy. Multi-heterodyne dual-comb spectroscopy – a comb-enabled technique of Fourier transform spectroscopy – demonstrates that the precisely spaced spectral lines of a laser frequency comb can be harnessed for broad spectral bandwidth linear and nonlinear spectroscopy, with much improved acquisition speed, precision and accuracy. Some of the specific features of dual-comb spectroscopy will be presented and selected applications to molecular spectroscopy where the technique may be particularly useful will be discussed

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