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Dividing orbital angular momentum of light
2016 15th International Conference on Optical Communications and Networks (ICOCN), 2016For the first time, we put forward an orbital angular momentum (OAM) divider based on coordinate transformation. The device can convert the OAM light into multiple diffracted light. The OAM of zeroth-order diffracted light is the product of the input OAM and the scaling parameter. We also extend the scheme to realize equal N-dividing of OAM.
Hailong Zhou +5 more
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Subwavelength Focusing of Light with Orbital Angular Momentum
Nano Letters, 2014The spatial structure of light with Orbital Angular Momentum, or "twisted light", closely resembles the shape of atomic wave functions. It could therefore make symmetry-forbidden transitions possible in quantum dots, or "artificial atoms". However, the vanishing intensity in the center of an OAM beam usually makes this effect weak.
Reinier W, Heeres, Valery, Zwiller
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Arbitrary spin-to–orbital angular momentum conversion of light
Science, 2017From spins to spirals The polarization state of light can be used in imaging applications and optical communications. Light can also be structured into vortices that carry optical angular momentum, which can be used for micromanipulation and enhancing the capacity of optical communication channels. Devlin et al.
Robert C. Devlin +4 more
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Orbital Angular Momentum of Light
2007This chapter looks at orbital angular momentum of ...
Barnett, Stephen, Zambrini, R.
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Measuring the orbital angular momentum of light
SPIE Proceedings, 2011We report a new simple optical system for the highly efficient measurement of the Orbital Angular Momentum States of Light. It uses an image reformatter to map each input state onto a different lateral position in the output aperture. This, near perfect, separation of states potentially makes available the high information capacity of OAM in both ...
Miles J. Padgett +4 more
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Measurement of light's orbital angular momentum
2013The desire to increase the amount of information that can be encoded onto a single photon has driven research in many areas of optics. One such area is the study of the orbital angular momentum (OAM) carried by a light beam. These beams have helical phase-fronts and carry an orbital angular momentum of l_hbar per photon, where the integer l is ...
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Interferometric Measurement of Orbital Angular Momentum of Light
Frontiers in Optics + Laser Science APS/DLS, 2019We provide the experimental evidence of orbital angular momentum Hall effect of light and present two different experimental strategies to quantify the Hall effect-induced change in orbital angular momentum and the phase structure of the beam.
Athira B S +5 more
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IV The Orbital Angular Momentum of Light
1999Publisher Summary This chapter discusses the orbital angular momentum of light, outlines the theoretical basis for the orbital angular momentum of beams within the paraxial approximation, and indicates the unapproximated theory, based on the full set of Maxwell equations.
L. Allen, M.J. Padgett, M. Babiker
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Perspectives on the orbital angular momentum of light
Journal of Optics, 2022Abstract Orbital angular momentum (OAM) has been known and understood in mechanical systems for centuries, but far less venerable in optical systems. It was only 30 years ago that OAM was directly associated with the spatial structure of light, specifically its phase structure, allowing OAM carrying light to be ...
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Control of orbital angular momentum of light with optical fibers
Optics Letters, 2012We present a fiber-based method for generating vortex beams with a tunable value of orbital angular momentum from -1ℏ to +1ℏ per photon. We propose a new (to our knowledge) method to determine the modal content of the fiber and demonstrate high purity of the desired vortex state (97% after 20 m, even after bends and twists).
Nenad, Bozinovic +3 more
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