Journal
OPTICS LETTERS
Volume 38, Issue 16, Pages 3148-3150Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.003148
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Funding
- UK Engineering and Physical Sciences Research Council [EP/H018190/1, EP/H000011/1]
- UK National Physical Laboratory under its Strategic Research Programme
- EPSRC [EP/H000011/1, EP/H018190/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H000011/1, EP/H018190/1] Funding Source: researchfish
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We present the first implementation of mid-infrared dual-comb spectroscopy with an optical parametric oscillator. Methane absorption spectroscopy was demonstrated with a resolution of 0.2 cm(-1) (5 GHz) at an acquisition time of similar to 10.4 ms over a spectral coverage at 2900-3050 cm(-1). The average power from each individual mid-infrared comb line was similar to 1 mu W, representing a power level much greater than typical difference-frequency-generation sources. Mid-infrared dual-comb spectroscopy opens up unique opportunities to perform broadband spectroscopic measurements with high resolution, high requisition rate, and high detection sensitivity. (C) 2013 Optical Society of America
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