title: Improvement of lens axicon's performance for longitudinally polarized beam generation by adding a dedicated phase transmittance.
abstract: 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).
authors.affiliation: Department of Physics, Anna University Tirunelveli, Tirunelveli, India. rajeskb@gmail.com
authors.forename: K B
authors.initials: KB
authors.lastname: Rajesh
authors.forename: Z
authors.initials: Z
authors.lastname: Jaroszewicz
authors.forename: P M
authors.initials: PM
authors.lastname: Anbarasan
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008027:Light; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation