Abstract
We characterize a new mid-infrared frequency comb generator based on difference frequency generation around 3.1 μm. High power per comb mode (>10−7 W/mode) is obtained over a broad spectral span (>750 nm, >790 cm−1). The source is used for direct absorption spectroscopy with a Michelson-based Fourier transform interferometer.
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Acknowledgments
The frequency comb source has been developed in collaboration with Menlo Systems GmbH within a Eurostars project. Research was conducted in the scope of the European Laboratory for Frequency Comb Spectroscopy. Support by the Max Planck Foundation and the Munich Center for Advanced Photonics is also acknowledged.
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Meek, S.A., Poisson, A., Guelachvili, G. et al. Fourier transform spectroscopy around 3 μm with a broad difference frequency comb. Appl. Phys. B 114, 573–578 (2014). https://doi.org/10.1007/s00340-013-5562-7
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DOI: https://doi.org/10.1007/s00340-013-5562-7