Computational multiheterodyne spectroscopy
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e1601227.full.pdf
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1.17 MB
Format
Adobe PDF
Checksum (MD5)
f28974d81832b9bbb6df26aafacd1162
Author(s)
Burghoff, David Patrick
Yang, Yang
Hu, Qing
Date Issued
November 2016
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Burghoff, D. et al. “Computational Multiheterodyne Spectroscopy.” Science Advances 2, 11 (November 2016): e1601227–e1601227 © 2016 The Authors
Version
Final published version
Abstract
Dual-comb spectroscopy allows for high-resolution spectra to be measured over broad bandwidths, but an essential requirement for coherent integration is the availability of a phase reference. Usually, this means that the combs' phase and timing errors must be measured and either minimized by stabilization or removed by correction, limiting the technique's applicability. We demonstrate that it is possible to extract the phase and timing signals of a multiheterodyne spectrum completely computationally, without any extra measurements or optical elements. These techniques are viable even when the relative linewidth exceeds the repetition rate difference and can tremendously simplify any dual-comb system. By reconceptualizing frequency combs in terms of the temporal structure of their phase noise, not their frequency stability, we can greatly expand the scope of multiheterodyne techniques.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Attribution-NonCommercial 2.0 Generic (CC BY-NC 2.0)
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/SCIADV.1601227
