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arXiv · 1607.08222

Microresonator Soliton Dual-Comb Spectroscopy

Myoung-Gyun Suh·Qi-Fan Yang·Ki Youl Yang·Xu Yi·Kerry Vahala
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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. In this regard, 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. Recently, a miniature soliton-based comb has emerged that can potentially transfer the dual-comb method to a chip platform. Unlike earlier microcombs, these new devices achieve high-coherence, pulsed mode locking. They generate broad, reproducible spectral envelopes, which is essential for dual-comb spectroscopy. Here, dual-comb spectroscopy is demonstrated using these devices. This work shows the potential for integrated, high signal-to-noise spectroscopy with fast acquisition rates.

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Myoung-Gyun Suh, Qi-Fan Yang, Ki Youl Yang, Xu Yi, Kerry Vahala. 2016-07-27. Microresonator Soliton Dual-Comb Spectroscopy. https://doi.org/10.1126/science.aah6516

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