Open AccessImprovement of lens axicon’s performance for longitudinally polarized beam generation by adding a dedicated phase transmittance
Author(s) -
K. B. Rajesh,
Zbigniew Jaroszewicz,
P. M. Anbarasan
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.026799
Subject(s) - axicon , optics , lens (geology) , physics , bessel beam , diffraction , gaussian beam , transmittance , phase (matter) , beam (structure) , laser beams , laser , quantum mechanics
The focal field of high NA lens axicon with a binary-phase optical component is calculated by using vector diffraction theory. Numerical results show that for a radially polarized Bessel Gaussian input field, the proposed system generates a subwavelength (0.395λ) longitudinally polarized beam with large uniform depth of focus (approximately 6 λ).