Applied Physics B

, Volume 109, Issue 3, pp 385–390

Comb-assisted spectroscopy of CO2 absorption profiles in the near- and mid-infrared regions

  • A. Gambetta
  • D. Gatti
  • A. Castrillo
  • N. Coluccelli
  • G. Galzerano
  • P. Laporta
  • L. Gianfrani
  • M. Marangoni
Article

Abstract

A method of performing comb-assisted spectroscopy in the 2- and 4-μm wavelength regions is deeply discussed and applied to the spectroscopic characterization of absorption lines of a CO2 gas sample. The method relies on the use of a sum-frequency-generation scheme to relate the frequency of the probing laser to a frequency comb provided by an Er:fiber femtosecond oscillator. Controlled scans of the comb repetition frequency allow highly accurate and reproducible acquisition of the absorption spectra, which are used for subsequent retrieval of the underlying spectroscopic parameters.

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • A. Gambetta
    • 1
  • D. Gatti
    • 1
  • A. Castrillo
    • 2
  • N. Coluccelli
    • 1
  • G. Galzerano
    • 3
  • P. Laporta
    • 1
  • L. Gianfrani
    • 2
  • M. Marangoni
    • 1
  1. 1.Dipartimento di FisicaPolitecnico di MilanoMilanoItaly
  2. 2.Dipartimento di Scienze AmbientaliSeconda Università di NapoliCasertaItaly
  3. 3.Istituto di Fotonica e NanotecnologieConsiglio Nazionale delle RicercheMilanoItaly

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