Shifting the phase of a coherent beam with a \(^{174}\)Yb\(^+\) ion: influence of the scattering cross section

We discuss and measure the phase shift imposed onto a radially polarized light beam when focusing it onto an \(^{174}\text{Yb}^{+}\) ion. In the derivation of the expected phase shifts we include the properties of the involved atomic levels. Furthermore, we emphasize the importance of the scattering...

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Bibliographic Details
Published in:arXiv.org 2017-01
Main Authors: Fischer, Martin, Srivathsan, Bharath, Alber, Lucas, Weber, Markus, Sondermann, Markus, Leuchs, Gerd
Format: Article
Language:English
Subjects:
Coherent scattering
Focusing
Laser cooling
Light beams
Polarized light
Scattering cross sections
Online Access:Get full text
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Summary:We discuss and measure the phase shift imposed onto a radially polarized light beam when focusing it onto an \(^{174}\text{Yb}^{+}\) ion. In the derivation of the expected phase shifts we include the properties of the involved atomic levels. Furthermore, we emphasize the importance of the scattering cross section and its relation to the efficiency for coupling the focused light to an atom. The phase shifts found in the experiment are compatible with the expected ones when accounting for known deficiencies of the focusing optics and the motion of the trapped ion at the Doppler limit of laser cooling.
ISSN:2331-8422
DOI:10.48550/arxiv.1609.08335