title: Intensity profiles and propagation of optical beams with bored helical phase.
abstract: A modification of the helical phase profile obtained by eliminating the on-axis screw-dislocation is presented. Beams with this phase possess a variety of interesting properties different from optical vortex beams. Numerical simulations verify analytic predictions and reveal that beams with this phase have intensity patterns which vary as a function of the phase parameters, as well as the propagation distance. Calculations of the Poynting vector and orbital angular momentum are also performed. Experiments verify the intensity profiles obtained in simulation.
authors.affiliation: Department of Physics, Ateneo de Manila University, Loyola Heights, Quezon City, Philippines 1108.
authors.forename: Stein Alec C
authors.initials: SA
authors.lastname: Baluyot
authors.forename: Nathaniel P
authors.initials: NP
authors.lastname: Hermosa