Doppler-free Fourier transform spectroscopy
Samuel A. Meek, Arthur Hipke, Guy Guelachvili, Theodor W. H\"ansch,, Nathalie Picqu\'e
TL;DR
This paper demonstrates a new broadband spectroscopy technique using two laser frequency combs to achieve sub-Doppler resolution, enabling precise two-photon excitation spectra of rubidium vapor.
Contribution
It introduces a novel application of dual frequency combs for sub-Doppler broadband spectroscopy, enhancing spectral resolution and accuracy.
Findings
Successful demonstration of sub-Doppler resolution in rubidium vapor
Effective two-photon excitation spectra obtained with dual combs
Potential for high-precision spectroscopic measurements
Abstract
The feasibility of sub-Doppler broadband multi-heterodyne spectroscopy with two laser frequency combs is demonstrated with two-photon excitation spectra of the 5S-5D transitions of rubidium vapor.
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