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Optics Letters, Vol. 38, Issue 11, pp. 1972-1974 (2013).
Jérémie Courtois, Rym Bouchendira, Malo Cadoret, Iolanda Ricciardi, Simona Mosca, Maurizio De Rosa, Paolo De Natale, and Jean-Jacques Zondy.
Laboratoire Commun de Métrologie LNE-Cnam, 61 rue du Landy, 93210 La Plaine Saint Denis, France and
INO–CNR, Istituto Nazionale di Ottica, Sezione di Napoli, and LENS, European Laboratory for Nonlinear Spectroscopy, Via Campi Flegrei 34, Pozzuoli (NA) I-80078, Italy
Abstract
We report on a widely (2.25 THz or 75 cm−1) and rapidly (4.5 THz/s) mode-hop-free (MHF) tunable mid-IR laser source at ∼3.3 um, consisting of a 5%-MgO:LiNbO3 singly resonant optical parametric oscillator (SRO) pumped by an automated broadly MHF tunable extended-cavity diode laser (ECDL). The broad and rapid MHF tuning capability of the ECDL is readily transferred to the SRO idler wave owing to the quasi-noncritical pump spectral acceptance bandwidth of the quasi-phase-matching. Fast and broadband high-resolution Doppler spectroscopy measurements of the ν3 band of CH4 are presented to illustrate the performance of the mid-IR optical parametric oscillator spectrometer.
© 2013 Optical Society of America
