| dc.contributor | RUBEN RAMOS GARCIA | |
| dc.creator | CARMELO GUADALUPE ROSALES GUZMAN | |
| dc.date | 2010-09 | |
| dc.date.accessioned | 2018-11-19T14:27:57Z | |
| dc.date.available | 2018-11-19T14:27:57Z | |
| dc.identifier | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/585 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/2258727 | |
| dc.description | The fact that light carries orbital angular momentum (OAM) associated to singularities embedded
in the phase function of optical fields was recently discovered by Allen. A couple of
years later, Courtial demonstrated that light beams might also possess OAM without the presence
of a singularity. Over the past years, OAM has been the subject of intense experimental
and theoretical study, including its conservation. Laguerre-Gaussian and Bessel are among the
most well-known beams with phase singularities carrying OAM. Fairly recently, Dholakia et al.
generated, by inserting a phase singularity into the main lobe of an Airy beam, a novel kind
of beam carrying OAM. As was expected, the vortex accelerates in a direction perpendicular
to the beam axis of propagation similar to an Airy beam. Motívate by this peculiarity, we
experimentally generated two Airy-vortex beams with opposite acceleration in order to study
the OAM during the collision. To our knowledge, there are no reports on the analysis of OAM
in collisions of beams carrying OAM. Two experiments were carried out, the first one involves
collisions of two beams carrying the same amount of OAM. In the second one, we collide beams
carrying opposite OAM. Analysis of the phase function from several planes perpendicular to
the propagation axis leads us to conclude that after the collision of two beams having the same
OAM, the phase singularity does not disappear. Whereas in the case where the beams have
opposite OAM, the phase singularity annihilates during the collision. These experiences suggest
a conservation of the OAM associated with phase singularities. Analysis of the phase was done
by means of a new technique proposed by Mazilu et al., which allows to detect and track the
singularities embedded in the phase function. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Instituto Nacional de Astrofísica, Óptica y Electrónica | |
| dc.relation | citation:Rosales-Guzman R.G. | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0 | |
| dc.subject | info:eu-repo/classification/Medida de fase/Phase measurement | |
| dc.subject | info:eu-repo/classification/Colisión de fotones/Photon collision | |
| dc.subject | info:eu-repo/classification/Momento angular/Angular momentum | |
| dc.subject | info:eu-repo/classification/cti/1 | |
| dc.subject | info:eu-repo/classification/cti/22 | |
| dc.subject | info:eu-repo/classification/cti/2209 | |
| dc.title | Analysis of the orbital angular momentum in colliding airy-vortex beams | |
| dc.type | Tesis | |
| dc.type | info:eu-repo/semantics/acceptedVersion | |
| dc.audience | students | |
| dc.audience | researchers | |
| dc.audience | generalPublic | |
