Journal ArticleDOI
Spin-to-orbital angular momentum conversion in a strongly focused optical beam.
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TLDR
It is demonstrated that optical spin-to-orbital angular momentum conversion can occur in a homogeneous and isotropic medium and that the orbital rotation speeds of trapped particles are altered because of this conversion as predicted by theory.Abstract:
As a fundamental property of light, the angular momentum of photons has been of great interest. Here, we demonstrate that optical spin-to-orbital angular momentum conversion can occur in a homogeneous and isotropic medium. This Letter presents both theoretical and experimental studies of this conversion in a tightly focused beam and shows that the orbital rotation speeds of trapped particles are altered because of this conversion as predicted by theory.read more
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Journal ArticleDOI
Orbital angular momentum: origins, behavior and applications
Alison M. Yao,Miles J. Padgett +1 more
TL;DR: In this paper, it was shown that if every polarization vector rotates, the light has spin; if the phase structure rotates and if a light has orbital angular momentum (OAM), the light can be many times greater than the spin.
Journal ArticleDOI
Spin-orbit interactions of light
TL;DR: In this paper, the authors provide an overview of the fundamental origins and important applications of the main spin-orbit interaction phenomena in modern optics that play a crucial role at subwavelength scales, including spin-Hall effects in inhomogeneous media and at optical interfaces, spindependent effects in non-paraxial (focused or scattered) fields, spin-controlled shaping of light using anisotropic structured interfaces (metasurfaces).
Journal ArticleDOI
Optical communications using orbital angular momentum beams
Alan E. Willner,Hao Huang,Yan Yan,Yongxiong Ren,Nisar Ahmed,Guodong Xie,Changjing Bao,Long Li,Yinwen Cao,Zhe Zhao,Jian Wang,Martin P. J. Lavery,Moshe Tur,Siddharth Ramachandran,Andreas F. Molisch,Nima Ashrafi,Solyman Ashrafi +16 more
TL;DR: In this article, the authors review recent progress in OAM beam generation/detection, multiplexing/demultiplexing, and its potential applications in different scenarios including free-space optical communications, fiber-optic communications, and RF communications.
Journal ArticleDOI
Chiral nanophotonic waveguide interface based on spin-orbit interaction of light
TL;DR: In this paper, a chiral waveguide coupler is proposed to control the directionality of the scattering process and can direct up to 94% of the incoupled light into a given direction.
Journal ArticleDOI
Transverse and longitudinal angular momenta of light
Konstantin Y. Bliokh,Franco Nori +1 more
TL;DR: In this article, a theoretical overview of momentum and angular momentum properties of generic optical fields, and methods for their experimental measurements are discussed, and a comprehensive classification of all known optical angular momenta based on their key parameters and main physical properties is presented.
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