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 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
Original language | English |
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Pages (from-to) | 3148-3150 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 38 |
Issue number | 16 |
DOIs | |
Publication status | Published - 15 Aug 2013 |
Keywords
- FREQUENCY COMBS
- LASERS
- SPECTROMETER