A narrow-linewidth, frequency-stabilized OPO for sub-Doppler molecular spectroscopy around 3 μm

Iolanda Ricciardi, Eduardo De Tommasi, Pasquale Maddaloni, Simona Mosca, Alessandra Rocco, Jean Jacques Zondy, Maurizio De Rosa, Paolo De Natale

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

We present a widely-tunable, singly-resonant optical parametric oscillator, emitting more than 1 W in the region between 2.7 and 4.2 μm. Two configurations have been studied in order to improve the frequency stability and the linewidth of the OPO emission. First, we stabilized the signal frequency to a high-finesse Fabry-Pérot cavity. Then, we locked both pump and signal frequency to the frequency comb generated by a NIR fs mode-locked fibre laser, linked to the caesium primary standard. With this last configuration we carried out saturation spectroscopy of several transitions belonging to the ν 1 rovibrational band of CH 3I, resolving their electronic quadrupole hyperfine structure, and determining the absolute frequency of the hyperfine components with a 50-kHz-uncertainty. An upper limit for the idler linewidth has been estimated as 200 kHz FWHM.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8434
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventNonlinear Optics and Applications VI - Brussels, Belgium
Duration: Apr 16 2012Apr 18 2012

Other

OtherNonlinear Optics and Applications VI
CountryBelgium
CityBrussels
Period4/16/124/18/12

Fingerprint

Molecular spectroscopy
molecular spectroscopy
Linewidth
Doppler
Spectroscopy
Mode-locked fiber lasers
Optical parametric oscillators
Cesium
Frequency stability
Full width at half maximum
Pumps
frequency stability
Optical Parametric Oscillator
Mode-locked Lasers
configurations
parametric amplifiers
hyperfine structure
Configuration
cesium
fiber lasers

Keywords

  • Hyperfine structure
  • Optical frequency comb
  • Optical parametric oscillator
  • Sub-Doppler spectroscopy

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ricciardi, I., De Tommasi, E., Maddaloni, P., Mosca, S., Rocco, A., Zondy, J. J., ... De Natale, P. (2012). A narrow-linewidth, frequency-stabilized OPO for sub-Doppler molecular spectroscopy around 3 μm. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8434). [84341Z] https://doi.org/10.1117/12.960334

A narrow-linewidth, frequency-stabilized OPO for sub-Doppler molecular spectroscopy around 3 μm. / Ricciardi, Iolanda; De Tommasi, Eduardo; Maddaloni, Pasquale; Mosca, Simona; Rocco, Alessandra; Zondy, Jean Jacques; De Rosa, Maurizio; De Natale, Paolo.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8434 2012. 84341Z.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ricciardi, I, De Tommasi, E, Maddaloni, P, Mosca, S, Rocco, A, Zondy, JJ, De Rosa, M & De Natale, P 2012, A narrow-linewidth, frequency-stabilized OPO for sub-Doppler molecular spectroscopy around 3 μm. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8434, 84341Z, Nonlinear Optics and Applications VI, Brussels, Belgium, 4/16/12. https://doi.org/10.1117/12.960334
Ricciardi I, De Tommasi E, Maddaloni P, Mosca S, Rocco A, Zondy JJ et al. A narrow-linewidth, frequency-stabilized OPO for sub-Doppler molecular spectroscopy around 3 μm. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8434. 2012. 84341Z https://doi.org/10.1117/12.960334
Ricciardi, Iolanda ; De Tommasi, Eduardo ; Maddaloni, Pasquale ; Mosca, Simona ; Rocco, Alessandra ; Zondy, Jean Jacques ; De Rosa, Maurizio ; De Natale, Paolo. / A narrow-linewidth, frequency-stabilized OPO for sub-Doppler molecular spectroscopy around 3 μm. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8434 2012.
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AU - Rocco, Alessandra

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AB - We present a widely-tunable, singly-resonant optical parametric oscillator, emitting more than 1 W in the region between 2.7 and 4.2 μm. Two configurations have been studied in order to improve the frequency stability and the linewidth of the OPO emission. First, we stabilized the signal frequency to a high-finesse Fabry-Pérot cavity. Then, we locked both pump and signal frequency to the frequency comb generated by a NIR fs mode-locked fibre laser, linked to the caesium primary standard. With this last configuration we carried out saturation spectroscopy of several transitions belonging to the ν 1 rovibrational band of CH 3I, resolving their electronic quadrupole hyperfine structure, and determining the absolute frequency of the hyperfine components with a 50-kHz-uncertainty. An upper limit for the idler linewidth has been estimated as 200 kHz FWHM.

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