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Photoionization of neutral atoms by X waves carrying orbital angular momentum

Robert A. Müller, Daniel Seipt, Randolf Beerwerth, Marco Ornigotti, Alexander Szameit, Stephan Fritzsche, and Andrey Surzhykov
Phys. Rev. A 94, 041402(R) – Published 21 October 2016

Abstract

In contrast to plane waves, twisted or vortex beams have a complex spatial structure. Both their intensity and energy flow vary within the wave front. Beyond that, polychromatic vortex beams, such as X waves, have a spatially dependent energy distribution. We propose a method to measure this (local) energy spectrum. The method is based on the measurement of the energy distribution of photoelectrons from alkali-metal atoms. On the basis of our fully relativistic calculations, we argue that even ensembles of atoms can be used to probe the local energy spectrum of short twisted pulses.

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  • Received 27 June 2016

DOI:https://doi.org/10.1103/PhysRevA.94.041402

©2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Robert A. Müller1,2,3,*, Daniel Seipt3,4, Randolf Beerwerth3,4, Marco Ornigotti5, Alexander Szameit5, Stephan Fritzsche3,4,6, and Andrey Surzhykov1,2

  • 1Physikalisch-Technische Bundesanstalt, D-38116 Braunschweig, Germany
  • 2Technische Universität Braunschweig, D-38106 Braunschweig, Germany
  • 3Helmholtz-Institute Jena, D-07743 Jena, Germany
  • 4Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany
  • 5Institute of Applied Physics, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany
  • 6Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany

  • *robert.mueller@ptb.de

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Issue

Vol. 94, Iss. 4 — October 2016

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