Journal
OPTICS LETTERS
Volume 41, Issue 18, Pages 4190-4193Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.41.004190
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Funding
- Vetenskapsradet (VR)
- Marie Curie Actions Intra European Fellowship [PIEF-GA-2013-625121]
- Career Integration [PCIG13-GA-2013-618285]
- European Research Council (ERC) [ERC-2011-AdG-291618 PSOPA]
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Dual-comb interferometry is a measurement technique that uses two laser frequency combs to retrieve complex spectra in a line-by-line basis. This technique can be implemented with electro-optic frequency combs, offering intrinsic mutual coherence, high acquisition speed and flexible repetition-rate operation. A challenge with the operation of this kind of frequency comb in dual-comb interferometry is its limited optical bandwidth. Here, we use coherent spectral broadening and demonstrate electro-optic dual-comb interferometry over the entire telecommunications C band (200 lines covering similar to 40 nm, measured within 10 mu s at 100 signal-to-noise ratio per spectral line). These results offer new prospects for electro-optic dual-comb interferometry as a suitable technology for high-speed broadband metrology, for example in optical coherence tomography or coherent Raman microscopy. (C) 2016 Optical Society of America
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