Special Issue

2017-03-22

Special Issue

 

Twisted Light with Orbital Angular Momentum

 

Deadline of manuscript submission: 31st May, 2017

 

In the 1600s, Kepler proposed that the momentum of sunlight was the reason that visible tail of comet pointed away from the sun. Beyond this optical linear momentum, in the early 1900s, Poynting reasoned how circularly polarized light carries also a spin angular momentum (SAM) of ±ћ per photon (ћ: reduced Plank’s constant). In the 1930s, Darwin went beyond spin to consider how rare high-order atomic transitions required an additional angular momentum exchange between light and atom corresponding to integer multiples of ћ. However, rather then being rare, in 1992 Allen, Woerdmann and co-workers recognized that every photon of a light beam having helical phasefronts carried this orbital angular momentum (OAM). These helically phased light beams have an OAM of lћ per photon, where l describes the azimuthal phase variation of exp(ilθ) (θ: azimuthal angle). Since that time, the study of OAM and other structured light beams has grown into a significant field giving rise to many developments in astronomy, optical manipulation and trapping, microscopy, imaging, sensing, nonlinear interactions, quantum science and optical communications.

 

This special issue aims to explore the fundamental aspects of OAM and its wide applications. It will focus on the state-of-the-art advances and future opportunities in OAM-carrying twisted light and applications in various areas.

 

Topics of interest include but are not limited to the following areas:

 

  Fundamental principles and properties of OAM-carrying or phase-structured light beams.

  Exotic light beams (Laguerre-Gaussian beams and Bessel beams with phase singularity, vector beams

  with polarization singularity, etc.).

  Generation, propagation, processing and detection of OAM-carrying twisted light beams.

  Spatial modes for free-space and fiber-based optical communications.

  Spatial modes for quantum information processing.

  Structured light for optical manipulation, optical/laser tweezers.

  Structured light for microscopy, astronomy, imaging, sensing.

  Structured electromagnetic waves outwith the visible spectrum (radio wave, microwave, terahertz

  wave, etc.) and their applications.

 

Special Issue Co-Editors

Jian Wang

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China

 

Miles J. Padgett

University of Glasgow, Scotland, UK

 

Alan E. Willner

University of Southern California, USA