Mid-infrared dual-comb spectroscopy with electro-optic modulators
Optics
2017-06-05 v1 Chemical Physics
Abstract
We demonstrate dual-comb spectroscopy based on difference frequency generation of frequency-agile near-infrared frequency combs, produced with the help of electro-optic modulators. The combs have a remarkably flat intensity distribution and their positions and line spacings can be selected freely by simply dialing a knob. We record, in the 3-micron region, Doppler-limited absorption spectra with resolved comb lines within milliseconds. Precise molecular line parameters are retrieved. Our technique holds promise for fast and sensitive time-resolved studies e.g. of trace gases.
Cite
@article{arxiv.1608.08013,
title = {Mid-infrared dual-comb spectroscopy with electro-optic modulators},
author = {Ming Yan and Pei-Ling Luo and Kana Iwakuni and Guy Millot and Theodor W. Hänsch and Nathalie Picqué},
journal= {arXiv preprint arXiv:1608.08013},
year = {2017}
}