Optical Angular Momentum in Nanophotonics II

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (30 June 2019) | Viewed by 4325

Special Issue Editor


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Guest Editor
Material Physics Center, Donostia-San Sebastian, Spain
Interests: quantum optics; optical angular momentum; quantum information; nanophotonics
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Special Issue Information

Dear Colleagues,

In the last 10 years, there has been an explosion of works on applications of structured light beams in the field of Nanophotonics. In particular, the study of the interaction of nanostructures and arrays of nanoparticles with the angular momentum of light has given rise to studies on the generation of vortex beams, control of the scattering of light, localized excitation of molecules, etc.

For all these reasons, we have decided that a collection of some recent works on this broad topic would be very timely and would raise the profile of this field of research. The topics that this issue will include, but is not limited to generation of angular momentum modes with structured materials, angular momentum dependent scattering of light by nanoparticles, spin orbit interactions of light beams, metamaterials, plasmonics, etc.

This issue concentrates the works of many important contributors to this emergent field of research. This issue will be a cornerstone to defining how structuring light beams can be used to control light matter interactions at the nanoscale.

Best regards,

Prof. Dr. Gabriel Molina-Terriza
Guest Editor

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Keywords

  • Nanophotonics
  • Optical angular momentum
  • Light scattering
  • Metamaterials
  • Plasmonics

Published Papers (1 paper)

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Research

10 pages, 2236 KiB  
Article
On-Chip Guiding of Higher-Order Orbital Angular Momentum Modes
by In Joon Lee and Sangin Kim
Photonics 2019, 6(2), 72; https://doi.org/10.3390/photonics6020072 - 23 Jun 2019
Cited by 6 | Viewed by 3979
Abstract
Higher-order orbital angular momentum (OAM) mode guiding in a waveguide which is suitable for on-chip integration has been investigated. Based on the relation between the Laguerre-Gaussian mode and the Hermite-Gaussian mode, it has been shown that two degenerate guided modes of π/2l [...] Read more.
Higher-order orbital angular momentum (OAM) mode guiding in a waveguide which is suitable for on-chip integration has been investigated. Based on the relation between the Laguerre-Gaussian mode and the Hermite-Gaussian mode, it has been shown that two degenerate guided modes of π/2l-rotation symmetry can support the l-th order OAM mode. In order to mimic the rotational symmetry, we have proposed the waveguide structure of a cross-shaped core and designed a waveguide that can support OAM modes of ±1 and ±2 topological charges simultaneously at a wavelength of 1550 nm. Purity of the OAM modes guided in the designed waveguide has been assessed by numerically calculating their topological charges from the field distribution, which were close to the theoretical values. We also investigated the guiding of OAM modes of ±3 and ±4 topological charges in our proposed waveguide structure, which revealed the possibility of the separate guiding of those OAM modes with relatively lower purity. Full article
(This article belongs to the Special Issue Optical Angular Momentum in Nanophotonics II)
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