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arXiv · 1311.6138

Broadband high-resolution two-photon spectroscopy with laser frequency combs

Arthur Hipke·Samuel A. Meek·Takuro Ideguchi·Theodor W. Hänsch·Nathalie Picqué
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Abstract

Two-photon excitation spectroscopy with broad spectral span 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 is revealed by a Fourier transform.

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Arthur Hipke, Samuel A. Meek, Takuro Ideguchi, Theodor W. Hänsch, Nathalie Picqué. 2013-11-24. Broadband high-resolution two-photon spectroscopy with laser frequency combs. https://arxiv.org/abs/1311.6138

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