Browsing by Author "PHELAN, CIARAN"
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Conical diffraction of a Gaussian beam with a two crystal cascade
LUNNEY, JAMES; DONEGAN, JOHN; BALLANTINE, KYLE; EASTHAM, PAUL; PHELAN, CIARAN (2012) -
Conical diffraction of linearly polarised light controls the angular position of a microscopic object
LUNNEY, JAMES; DONEGAN, JOHN; RAKOVICH, YURY; PHELAN, CIARAN; BALLANTINE, KYLE (2010)Conical diffraction of linearly polarised light in a biaxial crystal produces a beam with a crescent-shaped intensity profile. Rotation of the plane of polarisation produces the unique effect of spatially moving the ... -
The creation and annihilation of optical vortices using cascade conical diffraction
LUNNEY, JAMES; DONEGAN, JOHN; PHELAN, CIARAN; RAKOVICH, YURY; EASTHAM, PAUL (2011)Internal conical diffraction produces a superposition of orthogonally polarised zero- and first-order Bessel like beams from an incident circularly polarised Gaussian beam. For right-circularly polarised light, the first-order ... -
Generation of a radially polarized light beam using internal conical diffraction
DONEGAN, JOHN; LUNNEY, JAMES; PHELAN, CIARAN (2011)Using a combination of internal conical diffraction and Mach-Zehnder interferometry we have theoretically and experimentally demonstrated an efficient new technique for the conversion of a linearly polarized Gaussian laser ... -
Generation of continuously tunable fractional optical orbital angular momentum using internal conical diffraction
DONEGAN, JOHN; PHELAN, CIARAN; LUNNEY, JAMES; RAKOVICH, YURY (2010)When a left-circularly polarised Gaussian light beam, which has spin angular momentum (SAM) J sp = ? ? = 1 ? per photon, is incident along one of the optic axes of a slab of biaxial crystal it undergoes internal ... -
Optical trapping using cascade conical refraction of light
DONEGAN, JOHN; BALLANTINE, KYLE; PHELAN, CIARAN; LUNNEY, JAMES (2012)