Transverse and lateral shifts of the center of gravity of a refracted nonparaxial Bessel beam
2012 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 85, no 1, 013847- p.Article in journal (Refereed) Published
By applying geometrical optics (GO) to each plane-wave component of a nonparaxial electromagnetic (em) Bessel beam carrying spin and orbital angular momentum (SAM and OAM), we calculate the shift of the beam centroid during propagation in a weakly inhomogeneous, isotropic medium. Apart from recovering the transverse spin and orbital Hall shifts expected from paraxial theory, the nonparaxial treatment reveals additional shifts in both the transverse and lateral directions. When the propagation is close to perpendicular to the refractive index gradient, these shifts should be significant also for nearly paraxial beams. Suggestions are given for an experimental verification of the results.
Place, publisher, year, edition, pages
2012. Vol. 85, no 1, 013847- p.
IdentifiersURN: urn:nbn:se:uu:diva-169357DOI: 10.1103/PhysRevA.85.013847ISI: 000299843200016OAI: oai:DiVA.org:uu-169357DiVA: diva2:506845