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Microresonator soliton dual-comb spectroscopy

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Science  13 Oct 2016:
aah6516
DOI: 10.1126/science.aah6516

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Abstract

Rapid characterization of optical and vibrational spectra with high resolution can identify species in cluttered environments and is important for assays and early alerts. Dual-comb spectroscopy has emerged as a powerful approach to acquire nearly instantaneous Raman and optical spectra with unprecedented resolution. Spectra are generated directly in the electrical domain and avoid bulky mechanical spectrometers. We demonstrate a miniature soliton-based dual-comb system that can potentially transfer the approach to a chip platform. These devices achieve high-coherence, pulsed mode locking. They also feature broad, reproducible spectral envelopes, which is essential for dual-comb spectroscopy. Our work shows the potential for integrated, high signal-to-noise spectroscopy with fast acquisition rates.

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