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Frequency-comb-referenced singly-resonant OPO for sub-Doppler spectroscopy

  Articoli su Riviste JCR/ISI  (anno 2012)

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

Affiliazione Autori:  INO-CNR, LENS, European Laboratory for Nonlinear Spectroscopy, Via Campi Flegrei 34, I-80078 Pozzuoli (NA), Italy; Laboratoire Commun de Métrologie LNE-CNAM, 61 rue du Landy, 93210 La Plaine Saint-Denis, France

Riassunto:  We present a widely-tunable, singly-resonant optical parametric oscillator, emitting more than 1 W between 2.7 and 4.2 mu m, which is phase locked to a self-referenced frequency comb. Both pump and signal frequencies are directly phase-locked to the frequency comb of a NIR-emitting fs mode-locked fibre laser, linked, in turn, to the caesium primary standard. We estimate for the idler frequency a fractional Allan deviation of similar to 3 x 10(-12)tau(-1/2) between 1 and 200 s. To test the spectroscopic performance of the OPO, we carried out saturation spectroscopy of several transitions belonging to the nu(1) rovibrational band of CH3I, resolving their electronic quadrupole hyperfine structure, estimating a linewidth better than 200 kHz FWHM for the idler, and determining the absolute frequency of the hyperfine components with a 50-kHz-uncertainty. (C) 2012 Optical Society of America

Rivista/Giornale:  OPTICS EXPRESS
Volume n.:  20 (8)      Pagine da: 9178  a: 9186
Ulteriori informazioni:  The authors thank Gianluca Notariale for technical help. This work was partially supported by Regione Toscana through the project SIMPAS, in the framework of PORCReO FESR 2007-2013.
DOI: 10.1364/OE.20.009178

*Impact Factor della Rivista: (2012) 3.546   *Citazioni: 27
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  14/07/2019

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