SPECIAL issue: 22nd colloquium on high-resolution molecular spectroscopy HRMS Dijon 2011 (Part 2) A narrow-linewidth optical parametric oscillator for mid-infrared high-resolution spectroscopy

I. Ricciardi, E. De Tommasi, P. Maddaloni, S. Mosca, A. Rocco, J. J. Zondy, M. De Rosa, P. De Natale

Research output: Contribution to journalArticle

18 Citations (Scopus)


We present a narrow-linewidth, singly-resonant cw optical parametric oscillator, emitting more than 1 W in the 2.7-4.2 μm range. The OPO is pumped by a narrow linewidth (40 kHz) fibre-laser system and the signal frequency is locked to a high-finesse Fabry-Pé rot cavity in order to increase the spectral resolution, thus obtaining a residual linewidth of 70 kHz for the signal. We tested the spectral performance of our OPO on several transitions in the v 1 rovibrational band of CH 3I, measuring line intensities and showing sub-Doppler dip detection.

Original languageEnglish
Pages (from-to)2103-2109
Number of pages7
JournalMolecular Physics
Issue number17
Publication statusPublished - Sep 1 2012



  • frequency stabilization
  • optical parametric oscillator
  • sub-Doppler spectroscopy

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this