期刊
SCIENCE
卷 363, 期 6430, 页码 965-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaw2317
关键词
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资金
- Defense Advanced Research Projects Agency (DARPA) under the SCOUT [W911NF-16-1-0548]
- DODOS [HR0011-15-C-055]
- Air Force Office of Scientific Research [FA9550-18-1-0353]
- Kavli Nanoscience Institute
Determination of laser frequency with high resolution under continuous and abrupt tuning conditions is important for sensing, spectroscopy, and communications. We show that a single microresonator provides rapid and broadband measurement of optical frequencies with a relative frequency precision comparable to that of conventional dual-frequency comb systems. Dual-locked counterpropagating solitons having slightly different repetition rates were used to implement a vernier spectrometer, which enabled characterization of laser tuning rates as high as 10 terahertz per second, broadly step-tuned lasers, multiline laser spectra, and molecular absorption lines. Besides providing a considerable technical simplification through the dual-locked solitons and enhanced capability for measurement of arbitrarily tuned sources, our results reveal possibilities for chip-scale spectrometers that exceed the performance of tabletop grating and interferometer-based devices.
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