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Issue 37, 2015
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Phase-modulated electronic wave packet interferometry reveals high resolution spectra of free Rb atoms and Rb*He molecules

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Abstract

Phase-modulated wave packet interferometry is combined with mass-resolved photoion detection to investigate rubidium atoms attached to helium nanodroplets in a molecular beam experiment. The spectra of atomic Rb electronic states show a vastly enhanced sensitivity and spectral resolution when compared to conventional pump–probe wave packet interferometry. Furthermore, the formation of Rb*He exciplex molecules is probed and for the first time a fully resolved vibrational spectrum for transitions between the lowest excited 5Π3/2 and the high-lying electronic states 22Π, 42Δ, 62Σ is obtained and compared to theory. The feasibility of applying coherent multidimensional spectroscopy to dilute cold gas phase samples is demonstrated in these experiments.

Graphical abstract: Phase-modulated electronic wave packet interferometry reveals high resolution spectra of free Rb atoms and Rb*He molecules

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Article information


Submitted
03 Jul 2015
Accepted
12 Aug 2015
First published
12 Aug 2015

This article is Open Access

Phys. Chem. Chem. Phys., 2015,17, 23877-23885
Article type
Paper

Phase-modulated electronic wave packet interferometry reveals high resolution spectra of free Rb atoms and Rb*He molecules

L. Bruder, M. Mudrich and F. Stienkemeier, Phys. Chem. Chem. Phys., 2015, 17, 23877
DOI: 10.1039/C5CP03868E

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