Author:Sephton, Bereneice C; Dudley, Angela L; Forbes, ADate:Oct 2016Light beams that carry orbital angular momentum are often approximated by modulating an initial beam, usually Gaussian, with an azimuthal phase variation to create a vortex beam. Such vortex beams are well defined azimuthally, but the radial ...Read more
Author:Lavery, MPJ; Dudley, Angela L; Forbes, A; Courtial, J; Padgett, MJDate:Sep 2011The authors have developed an interferometer requiring only minimal angular alignment for the routing of beams carrying orbital angular momentum. The Mach–Zehnder interferometer contains a Dove prism in each arm where each has a mirror plane ...Read more
Author:Forbes, A; Dudley, Angela L; Roux, SDate:Dec 2010Research at the Mathematical Optics Group uses "twisted" light to study new quatum-based information security systems. In order to understand the structure of "twisted" light, it is useful to start with an ordinary light beam with zero twist, ...Read more