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Opt Lett. 2013 Aug 15;38(16):3148-50. doi: 10.1364/OL.38.003148.

Mid-infrared dual-comb spectroscopy with an optical parametric oscillator.

Abstract

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 ~10.4 ms over a spectral coverage at 2900-3050 cm(-1). The average power from each individual mid-infrared comb line was ~1 μW, 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.

PMID:
24104672
DOI:
10.1364/OL.38.003148
[Indexed for MEDLINE]

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