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Photovoltaic effect of light carrying orbital angular momentum on a semiconducting stripe |
Optics Express, Vol. 20, Issue 25, pp. 27792-27799 (2012)
http://dx.doi.org/10.1364/OE.20.027792
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Abstract
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
History
Original Manuscript: September 13, 2012
Revised Manuscript: October 25, 2012
Manuscript Accepted: October 26, 2012
Published: November 29, 2012
Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-25-27792
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