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Ultrafast electrooptic dual-comb interferometry
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DOI：10.1364/OE.23.030557.png)
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Dual-comb interferometry is a particularly compelling technique that relies on the phase coherence of two laser frequency combs for measuring broadband complex spectra. This method is rapidly advancing the field of optical spectroscopy and empowering new applications, from nonlinear microscopy to laser ranging. Up to now, most dual-comb interferometers were based on modelocked lasers, whose repetition rates have restricted the measurement speed to similar to kHz. Here we demonstrate a dual-comb interferometer that is based on electrooptic frequency combs and measures consecutive complex spectra at an ultra-high refresh rate of 25 MHz. These results pave the way for novel scientific and metrology applications of frequency comb generators beyond the realm of molecular spectroscopy, where the measurement of ultrabroadband waveforms is of paramount relevance. (C) 2015 Optical Society of America
Keyword:
OPTICAL FREQUENCY COMBS
ABSOLUTE DISTANCE MEASUREMENTS
SPECTROSCOPY
GENERATION
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IF:
3.3
论文数:
6.1W
被引数:
14.3W
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