Abstract

The development of a spectroscopy device on a chip that could realize real-time fingerprinting with label-free and high-throughput detection of trace molecules represents one of the big challenges in sensing. Dual-comb spectroscopy (DCS) in the mid-infrared is a powerful technique offering high acquisition rates and signal-to-noise ratios through use of only a single detector with no moving parts. Here, we present a nanophotonic silicon-on-insulator platform designed for mid-infrared (mid-IR) DCS. A single continuous-wave low-power pump source generates two mutually coherent mode-locked frequency combs spanning from 2.6 to 4.1 μm in two silicon microresonators. A proof-of-principle experiment of vibrational absorption DCS in the liquid phase is achieved acquiring spectra of acetone spanning from 2900 to 3100 nm at 127-GHz (4.2-cm−1) resolution. These results represent a significant step towards a broadband, mid-IR spectroscopy instrument on a chip for liquid/condensed matter phase studies.

Details

Title
Silicon-chip-based mid-infrared dual-comb spectroscopy
Author
Yu, Mengjie 1 ; Okawachi, Yoshitomo 2 ; Griffith, Austin G 3 ; Picqué, Nathalie 4 ; Lipson, Michal 5 ; Gaeta, Alexander L 2   VIAFID ORCID Logo 

1  Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA; School of Electrical and Computer Engineering, Cornell University, Ithaca, NY, USA 
2  Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA 
3  School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA 
4  Max-Planck-Institut für Quantenoptik, Garching, Germany; Ludwig-Maximilians-Universität München, Fakultät für Physik, München, Germany; Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France 
5  Department of Electrical Engineering, Columbia University, New York, NY, USA 
Pages
1-6
Publication year
2018
Publication date
May 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-018-04350-1
ProQuest document ID
2038671976
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.