Rapid generation of light beams carrying orbital angular momentum
Abstract
We report a technique for encoding both amplitude and phase variations onto a laser beam using a single digital micro-mirror device (DMD). Using this technique, we generate Laguerre-Gaussian and vortex orbital-angular-momentum (OAM) modes, along with modes in a set that is mutually unbiased with respect to the OAM basis. Additionally, we have demonstrated rapid switching among the generated modes at a speed of 4 kHz, which is much faster than the speed regularly achieved by phase-only spatial light modulators (SLMs). The dynamic control of both phase and amplitude of a laser beam is an enabling technology for classical communication and quantum key distribution (QKD) systems that employ spatial mode encoding.
Additional Information
© 2013 Optical Society of America. Received 12 Sep 2013; revised 14 Nov 2013; accepted 20 Nov 2013; published 2 Dec 2013. We gratefully acknowledge valuable discussions with M. N. O'Sullivan, Z. Shi, E. Karimi, J. Vornehm, and D. Gauthier. This work was supported by the DARPA/DSO InPho program and the Canadian Excellence Research Chair (CERC) program and the European Commission through a Marie Curie fellowship. OSML also acknowledges support from the CONACyT.Attached Files
Published - oe-21-25-30196.pdf
Submitted - 1311.4811.pdf
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Additional details
- Eprint ID
- 96826
- Resolver ID
- CaltechAUTHORS:20190628-110703432
- Defense Advanced Research Projects Agency (DARPA)
- Canada Research Chairs Program
- Marie Curie Fellowship
- Consejo Nacional de Ciencia y Tecnología (CONACYT)
- Created
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2019-07-08Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field