Optical velocity meter based on Ramsey oscillations in a double-grating setup

J. Preclíková, M. Kozák, D. Fregenal, and J. P. Hansen
Phys. Rev. A 89, 043406 – Published 7 April 2014

Abstract

We propose a method for measuring velocities of atoms or molecules in a gas phase based on time-resolved laser experiments. Two intensity gratings of electromagnetic field with variable time delay τ are created by interfering of four laser pulses. Using first-order perturbation theory, we show that such arrangement can be used for measuring particle velocities, which have an optical transition to a long-living excited state. It is shown that the optical Ramsey oscillations obtain a characteristic modulation that reflects the distribution of velocities.

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  • Received 13 November 2013

DOI:https://doi.org/10.1103/PhysRevA.89.043406

©2014 American Physical Society

Authors & Affiliations

J. Preclíková1, M. Kozák2, D. Fregenal3, and J. P. Hansen1

  • 1Department of Physics and Technology, University of Bergen, N-5007 Bergen, Norway
  • 2Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic
  • 3Centro Atómico Bariloche and Consejo Nacional de Investigaciones Cientícas y Técnicas. R8402AGP S.C. de Bariloche, Argentina

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Vol. 89, Iss. 4 — April 2014

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