title: Microresonator soliton dual-comb spectroscopy.
abstract: Measurement of optical and vibrational spectra with high resolution provides a way to identify chemical species in cluttered environments and is of general importance in many fields. Dual-comb spectroscopy has emerged as a powerful approach for acquiring nearly instantaneous Raman and optical spectra with unprecedented resolution. Spectra are generated directly in the electrical domain, without the need for 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, an essential feature for dual-comb spectroscopy. Our work shows the potential for integrated spectroscopy with high signal-to-noise ratios and fast acquisition rates.
authors.affiliation: T. J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA.
authors.forename: Myoung-Gyun
authors.initials: MG
authors.lastname: Suh
authors.affiliation: T. J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA.
authors.forename: Qi-Fan
authors.initials: QF
authors.lastname: Yang
authors.affiliation: T. J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA.
authors.forename: Ki Youl
authors.initials: KY
authors.lastname: Yang
authors.affiliation: T. J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA.
authors.forename: Xu
authors.initials: X
authors.lastname: Yi
authors.affiliation: T. J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA. vahala@caltech.edu.
authors.forename: Kerry J
authors.initials: KJ
authors.lastname: Vahala