Open AccessSpiral autofocusing Airy beams carrying power-exponent-phase vortices
Author(s) -
Peng Li,
Sheng Liu,
Tao Peng,
Gaofeng Xie,
Xuetao Gan
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.007598
Subject(s) - vortex , optical vortex , physics , optics , spiral (railway) , optical tweezers , phase (matter) , mechanics , quantum mechanics , mathematical analysis , mathematics
We propose a new type of noncanonical optical vortex, named "power-exponent-phase vortex (PEPV)". The spiral focusing of the autofocusing Airy beams carrying PEPVs are experimentally demonstrated, and the physical mechanism is theoretically analyzed by using the energy flow and far field mapping. In addition, the influences of the parameters of PEPVs on the focal fields and orbital angular momenta are also discussed. It is expected that the proposed PEPVs and the corresponding conclusions can be useful for the extension applications of optical vortices, especially for particle trapping and rotating.