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

Preclíková, Jana; Kozák, Martin; Fregenal, Daniel; Hansen, Jan Petter
Peer reviewed, Journal article
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URI
https://hdl.handle.net/1956/11060
Date
2014-04
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  • Department of Physics and Technology [1343]
Original version
https://doi.org/10.1103/physreva.89.043406
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.
Publisher
American Physical Society
Copyright
Copyright 2014 American Physical Society

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