118 citations · 457 across the 17 of their papers we have counts for
17 papers
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…
Quadrupole absorption rate and orbital angular momentum transfer for atoms in optical vortices
Smail Bougouffa, Mohamed Babiker
Recent experiments involving the interaction of optical vortices with atoms in quadrupole transitions have been shown to be accompanied by the exchange of orbital angular momentum…
Atom trapping and dynamics in the interaction of optical vortices with quadrupole-active transitions
Smail Bougouffa, Mohamed Babiker
Recent studies have confirmed the coupling of optical vortices, such as Laguerre-Gaussian and Bessel-Gaussian modes, to quadrupole-active atomic transitions. This interaction has b…
Interference of axially-shifted Laguerre-Gaussian beams and their interaction with atoms
K. Koksala, V. E. Lembessisb, J. Yuanc +1
Counter-propagating co-axial Laguerre-Gaussian (LG) beams are considered, not in the familiar scenario where the focal planes coincide at , but when they are separated by a fi…