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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 25 — Dec. 3, 2012
  • pp: 27792–27799

Photovoltaic effect of light carrying orbital angular momentum on a semiconducting stripe

J. Wätzel, A. S. Moskalenko, and J. Berakdar  »View Author Affiliations

Optics Express, Vol. 20, Issue 25, pp. 27792-27799 (2012)

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We investigate the influence of a light beam carrying an orbital angular momentum on the current density of an electron wave packet in a semiconductor stripe. It is shown that due to the photo-induced torque the electron density can be deflected to one of the stripe sides. The direction of the deflection is controlled by the direction of the light orbital momentum. In addition the net current density can be enhanced. This is a photovoltaic effect that can be registered by measuring the generated voltage drop across the stripe and/or the current increase.

© 2012 OSA

OCIS Codes
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: September 13, 2012
Revised Manuscript: October 25, 2012
Manuscript Accepted: October 26, 2012
Published: November 29, 2012

J. Wätzel, A. S. Moskalenko, and J. Berakdar, "Photovoltaic effect of light carrying orbital angular momentum on a semiconducting stripe," Opt. Express 20, 27792-27799 (2012)

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