Type

Journal Article

Authors

Ciaran Phelan
Yury Rakovich
Paul Eastham
John Donegan
James Lunney
D P O'Dwyer

Subjects

Physics

Topics
birefringence crystal optics nonlinear dynamics conical refraction optics diffraction nanoscience materials models statistical first order computer simulation scattering radiation refractometry optical vortices

The creation and annihilation of optical vortices using cascade conical diffraction (2011)

Abstract 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 beam has an optical vortex of charge ?1. Upon propagation of the first-order beam through a second biaxial crystal, a process which is termed cascade conical refraction, the generated beam is a superposition of orthogonally polarised fields of charge 0 and ?1 or 0 and ?2. This spin to orbital angular momentum conversion provides a new method for the generation and annihilation of optical vortices in an all-optical arrangement that is solely dependent on the incident polarisation and vortex handedness.
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Full list of authors on original publication

Ciaran Phelan, Yury Rakovich, Paul Eastham, John Donegan, James Lunney, D P O'Dwyer

Experts in our system

1
Paul Eastham
Trinity College Dublin
Total Publications: 44
 
2
John Francis Donegan
Trinity College Dublin
Total Publications: 152
 
3
James Gerard Lunney
Trinity College Dublin
Total Publications: 55