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Accession Number:
ADA616749
Title:
Novel Detection of Optical Orbital Angular Momentum
Descriptive Note:
Final rept. 16 Nov 2012-14 Aug 2014
Corporate Author:
NEW MEXICO STATE UNIV LAS CRUCES
Report Date:
2014-11-16
Pagination or Media Count:
16.0
Abstract:
A light beam carry Orbital Angular Momentum OAM has typical wave front and singularity at the optical axis. The corresponding azimuthal phase is weighted by an integer number which fundamentally represents the OAM component along the propagation. These characteristics have great advantages to be employed in signal transmission technique. Extreme large number of the Hilbert spaces would be available however, OAM states are sensitive for the atmospheric turbulence even in the weak regime. Paterson describes the generated scattering by the presence of the turbulence. The decoherence effect that associates with Languerre-Gauss beam is considered and the probability of obtaining different OAM measurements is also calculated. Later on, Taylor and Boyd considered optical vortex beams with constant amplitude. They determined the probability to detect a photon with no change in its OAM states among traveling inside the atmosphere. Both studies assume only a phase distortion causes by the atmospheric turbulence with no change in the wave amplitude.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
