118 citations · 457 across the 17 of their papers we have counts for
6 papers · 1 filter
Optical angular momentum in atomic transitions: a paradox
Stephen M. Barnett, Fiona C. Speirits, Mohamed Babiker
Stated simply the paradox is as follows: it is clear that the orbital angular momentum of a light beam in its direction of propagation is an intrinsic quantity, and therefore has t…
Absorption of hybrid fibre modes by Cs atoms in quadrupole transitions
Smail Bougouffa, Mohamed Babiker
We evaluate the rate of the absorption of an optical nanofiber mode by a Cs atom in an electric quadrupole transition. With the Cs atom localized near the outer surface of the opti…
Chirality and helicity of optical vortices of small beam waists
Koray Koksal, Mohamed Babiker, Vassilis E. Lembessis +1
The chirality and helicity of linearly polarised Laguerre-Gaussian (LG) beams are examined. Such a type of light possesses a substantial longitudinal field when its beam waist is s…
Robust and adjustable C-shaped vortex beams
M. Mousley, G. Thirunavukkarasu, M. Babiker +1
Wavefront engineering is an important quantum technology. Here, we demonstrate the design and production of a robust C-shaped and orbital angular momentum (OAM) carrying beam in wh…
Molecular chirality and the orbital angular momentum of light
David L. Andrews, Luciana C. Davila Romero, Mohamed Babiker
Optical beams with a new and distinctive type of helicity have become the subject of much recent interest. While circularly polarised light comprises photons with spin angular mome…
The influence of a metallic sheet on an evanescent mode atomic mirror
J. B. Kirk, C. R. Bennett, M. Babiker +1
A theory of evanescent mode atomic mirrors utilising a metallic sheet on a dielectric substrate is described. The emphasis here is on the role of the metallic sheet and on the eval…