Coherent multiheterodyne spectroscopy using stabilized optical frequency combs.

By Ian Coddington, William C. Swann, Nathan R. Newbury. Physical Review Letters, 2007

692 citations recorded by the source corpus.

The broadband, coherent nature of narrow-linewidth fiber frequency combs is exploited to measure the full complex spectrum of a molecular gas through multiheterodyne spectroscopy. We measure the absorption and phase shift experienced by each of 155 000 individual frequency-comb lines, spaced by 100 MHz and spanning from 1495 to 1620 nm, after passing through hydrogen cyanide gas. The measured phase spectrum agrees with the Kramers-Kronig transformation of the absorption spectrum. This technique can provide a full complex spectrum rapidly, over wide bandwidths, and with hertz-level accuracy.

Subfields: Atomic and Molecular Physics, and Optics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/bb3b49d43cf5f3f67a201f1b78696f7b7b9a0019

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In Atomic and Molecular Physics, and Optics

In Spectroscopy

Citations in the corpus

Coherent sampling of active mode-locked terahertz quantum cascade lasers and frequency synthesis (2011, background): “, and incoherent and coherent multiheterodyne spectroscopy in the near-IR and mid-IR range”
Dual-comb spectroscopy (2016, positive): “DCS quickly evolved to provide comb-tooth-resolved spectra [6,9], ultimately providing a high signal-to-noise ratio (SNR) over broad optical bandwidths in the near-IR [24,25,50].”
Spectral line-by-line pulse shaping of an on-chip microresonator frequency comb (2011, background): “Optical frequency combs consisting of periodic discrete spectral lines with fixed frequency positions are powerful tools for high precision frequency metrology, spectroscopy, broadband gas sensing, optical clocks, and other applications [1-7].”