Results 11 to 20 of about 5,691 (305)
Photocurrent detection of the orbital angular momentum of light. [PDF]
Science, 2020 Optical vortices on demand Light has several degrees of freedom (wavelength, polarization, pulse length, and so on) that can be used to encode information. A light beam or pulse can also be structured to have the property of orbital angular momentum, becoming a vortex.
Ji Z +8 more
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Rapid generation of light beams carrying orbital angular momentum
Optics Express, 2013 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.
Mohammad Mirhosseini +5 more
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High purity orbital angular momentum of light
Optics Express, 2022 We present a novel technique for generating beams of light carrying orbital angular momentum (OAM) that increases mode purity and decreases singularity splitting by orders of magnitude. This technique also works to control and mitigate beam divergence within propagation distances less than the Rayleigh length.
Andrew Sontag +2 more
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Efficient separation of the orbital angular momentum eigenstates of light [PDF]
Nature Communications, 2013 Orbital angular momentum (OAM) of light is an attractive degree of freedom for funda- mentals studies in quantum mechanics. In addition, the discrete unbounded state-space of OAM has been used to enhance classical and quantum communications. Unambiguous mea- surement of OAM is a key part of all such experiments.
Mohammad Mirhosseini +3 more
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Nonlinear Conversion of Orbital Angular Momentum States of light [PDF]
Frontiers in Optics + Laser Science 2021, 2021 We investigate the second harmonic generation of light field carrying orbital angular momentum in bulk χ(2) material. We show that due to conservation of energy and momentum, the frequency doubled beam light has a modified spatial distribution and mode characteristics.
Bassène, Pascal +5 more
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Orbital angular momentum of light for communications [PDF]
Applied Physics Reviews, 2021 Structured light, especially beams carrying orbital angular momentum (OAM), has gained much interest due to its unique amplitude and phase structures. In terms of communication systems, multiple orthogonal OAM beams can be potentially utilized for increasing link capacity in different scenarios.
Alan E. Willner +4 more
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Machine-learning recognition of light orbital-angular-momentum superpositions [PDF]
Physical Review A, 2021 We developed a method to characterize arbitrary superpositions of light orbital angular momentum (OAM) with high fidelity by using astigmatic tomography and machine learning processing. In order to define each superposition unequivocally, we combine two intensity measurements.
B. Pinheiro da Silva +4 more
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Optomechanical detection of light with orbital angular momentum
Optics Express, 2020 We present the design of an optomechanical device that allows sensitive transduction of the orbital angular momentum of light. An optically induced twist imparted on the device is detected using a photonic crystal cavity optomechanical system. This device allows the measurement of the orbital angular momentum of light when photons are absorbed by the ...
Hamidreza Kaviani +7 more
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Quantum orbital angular momentum of elliptically symmetric light [PDF]
Physical Review A, 2013 We present a quantum mechanical analysis of the orbital angular momentum of a class of recently discovered elliptically-symmetric stable light fields --- the so-called Ince-Gauss modes. We study, in a fully quantum formalism, how the orbital angular momentum of these beams varies with their ellipticity and discover several compelling features ...
William N. Plick +4 more
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Orbital Angular Momentum of Light in Optics Instruction [PDF]
Education and Training in Optics and Photonics, 2007 We present an introduction to the orbital angular momentum of light for use in optics instruction. This type of angular momentum is a new fundamental concept discovered fifteen years ago. It arises in optical beams with helical wave-fronts. We introduce it as part of a fundamental discussion of the momentum of light.
Enrique J. Galvez, Nikolay Zhelev
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