High speed switching between arbitrary spatial light profiles

Radwell, N., Brickus, D., Clark, T.W. and Franke-Arnold, S. (2014) High speed switching between arbitrary spatial light profiles. Optics Express, 22(11), pp. 12845-12852. (doi:10.1364/OE.22.012845)

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Publisher's URL: http://dx.doi.org/10.1364/OE.22.012845

Abstract

Complex images, inscribed into the spatial profile of a laser beam or even a single photon, offer a highly efficient method of data encoding. Here we present a prototype system which can quickly modulate between arbitrary images. We display an array of holograms, each defined by its phase and intensity profile, on a spatial light modulator. The input beam is then steered by an acousto-optic modulator to one of these holograms, where it is converted into the desired light mode. We demonstrate switching between characters within three separate alphabets at a switching rate of up to10 kHz. This rate is limited by our detection system, and we anticipate that the system is capable of far higher rates. Furthermore our system is not limited in efficiency by channel number, making it ideal for quantum communication applications.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Radwell, Dr Neal and Franke-Arnold, Dr Sonja
Authors: Radwell, N., Brickus, D., Clark, T.W., and Franke-Arnold, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN:1094-4087
Copyright Holders:Copyright © 2014 Optical Society of America
First Published:First published in Optics Express 22(11):12845-12852
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
549871Challenges in Orbital Angular MomentumMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/I012451/1P&A - PHYSICS & ASTRONOMY