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

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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. (C) 2012 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2012-12
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.20, no.25, pp.27792 - 27799

ISSN
1094-4087
DOI
10.1364/OE.20.027792
URI
http://hdl.handle.net/10203/261893
Appears in Collection
PH-Journal Papers(저널논문)
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