Nonlinear transmission spectroscopy with dual frequency combs
arXiv:1408.2158 · doi:10.1103/PhysRevA.90.023804
Abstract
We show how two frequency combs , can be used to measure single-photon, two-photon absorption (TPA), and Raman resonances in a molecule with three electronic bands, by detecting the radio frequency modulation of the nonlinear transmission signal. Some peaks are independent of the carrier frequency of the comb and others shift with that frequency and have a width close to the comb width. TPA and Raman resonances independent of the carrier frequency are selected by measuring the transmission signal and the single-photon resonances are selected by measuring the transmission signal . Sinusoidal spectral phase shaping strongly affects the TPA, but not the Raman resonances.
13 pages, 11 Figures
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