publication . Preprint . 2013

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

Hipke, Arthur; Meek, Samuel A.; Ideguchi, Takuro; Hänsch, Theodor W.; Picqué, Nathalie;
Open Access English
  • Published: 24 Nov 2013
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.
Subjects
arXiv: Physics::OpticsPhysics::Atomic Physics
free text keywords: Physics - Optics
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