dc.contributor.author | DONEGAN, JOHN | en |
dc.contributor.author | PHELAN, CIARAN | en |
dc.contributor.author | LUNNEY, JAMES | en |
dc.contributor.author | RAKOVICH, YURY | en |
dc.date.accessioned | 2013-08-07T10:04:27Z | |
dc.date.available | 2013-08-07T10:04:27Z | |
dc.date.issued | 2010 | en |
dc.date.submitted | 2010 | en |
dc.identifier.citation | O'Dwyer, DP, Phelan, CF, Rakovich, YP, Eastham, PR, Lunney, JG, Donegan, JF, Generation of continuously tunable fractional optical orbital angular momentum using internal conical diffraction, Optics Express, 18, 16, 2010, 16480-16485 | en |
dc.identifier.other | Y | en |
dc.identifier.uri | http://hdl.handle.net/2262/66871 | |
dc.description | PUBLISHED | en |
dc.description.abstract | 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 conical
diffraction and propagates as a hollow cone of light in the crystal. The
emergent beam is a superposition of equal amplitude zero and first order
Bessel like beams. The zero order beam is left-circularly polarised with zero
orbital angular momentum (OAM)
J
orb
=
?
?
= 0, while the first order beam
is right-circularly polarized but carries OAM of
J
orb
= 1
?
per photon. Thus,
taken together the two beams have zero SAM and
J
orb
= ?
?
per photon. In
this paper we examine internal conical diffraction of an elliptically polarised
beam, which has fractional SAM, and demonstrate an all-optical process for
the generation light beams with fractional OAM up to ? 1
? | en |
dc.description.sponsorship | We acknowledge support from SFI under research grants 06/RFP/PHY029 and 08/IN.1/I1862
and helpful discussions with Sir Michael Berry and Kishan Dholakia. | en |
dc.format.extent | 16480-16485 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Optics Express | en |
dc.relation.ispartofseries | 18 | en |
dc.relation.ispartofseries | 16 | en |
dc.rights | Y | en |
dc.subject | Gaussian light beam | en |
dc.subject.lcsh | Gaussian light beam | en |
dc.title | Generation of continuously tunable fractional optical orbital angular momentum using internal conical diffraction | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/jdonegan | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/phelanci | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/rakovicy | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/jlunney | en |
dc.identifier.rssinternalid | 72546 | en |
dc.identifier.doi | http://dx.doi.org/10.1364/OE.18.016480 | en |
dc.identifier.orcid_id | 0000-0002-5240-1434 | en |