Journal
OPTICS LETTERS
Volume 27, Issue 8, Pages 640-642Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.27.000640
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A new optical parametric oscillator (OPO) for the mid-infrared wavelength region of 3-3.8 mum with an idler output power of up to 1.5 W has been developed. The singly resonant OPO is pumped by a single-mode, 10-W, continuous-wave Nd:YAG laser and consists of a bow-tie ring cavity with a fan-out periodically poled lithium niobate crystal and a low-finesse intracavity air-spaced etalon. The single-frequency idler output can be continuously tuned over 24 GHz with 700-mW power by tuning of the pump laser. The tuning was demonstrated by recording of an absorption line of ethane with photoacoustic spectroscopy. (C) 2002 Optical Society of America.
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