Broadband Doppler-limited two-photon and stepwise excitation spectroscopy with 
laser frequency combs.

Hipke, A.; Meek, S. A.; Ideguchi, T.; Hänsch, T. W.; Picqué, N.

doi:10.1103/PhysRevA.90.011805

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Broadband Doppler-limited two-photon and stepwise excitation spectroscopy with laser frequency combs.

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Meek, S. A.
Research Group of Precision Infrared Spectroscopy, MPI for Biophysical Chemistry, Max Planck Society;

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http://journals.aps.org/pra/pdf/10.1103/PhysRevA.90.011805
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Citation

Hipke, A., Meek, S. A., Ideguchi, T., Hänsch, T. W., & Picqué, N. (2014). Broadband Doppler-limited two-photon and stepwise excitation spectroscopy with laser frequency combs. Physical Review A, 90(1): 011805. doi:10.1103/PhysRevA.90.011805.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-D183-4

Abstract

Multiplex two-photon excitation spectroscopy is demonstrated at Doppler-limited resolution. We describe first Fourier-transform two-photon spectroscopy of an atomic sample with two mode-locked laser oscillators in a dual-comb technique. Each transition is uniquely identified by the modulation imparted by the interfering comb excitations. The temporal modulation of the spontaneous two-photon fluorescence is monitored with a single photodetector, and the spectrum of all excited transitions is revealed by a Fourier transform.