A Compact Mid-Infrared Dual-Comb Spectrometer with 1000 Nm of Spectral Coverage

摘要

We present a mid-infrared dual-comb spectrometer employing PPLN waveguides that generates a broad 3-4μm instantaneous spectrum with 5 mW of power. Outdoor spectroscopy is demonstrated and portable operation should be possible. © 2019 The Author(s) Work of the U.S. government, not subject to copyright.