title: Direct generation of abruptly focusing vortex beams using a 3/2 radial phase-only pattern.
abstract: Abruptly focusing Airy beams have previously been generated using a radial cubic phase pattern that represents the Fourier transform of the Airy beam. The Fourier transform of this pattern is formed using a system length of 2f, where f is the focal length of the Fourier transform lens. In this work, we directly generate these abruptly focusing Airy beams using a 3/2 radial phase pattern encoded onto a liquid crystal display. The resulting optical system is much shorter. In addition, we can easily produce vortex patterns at the focal point of these beams. Experimental results match theoretical predictions.
authors.affiliation: San Diego State University, Department of Physics, San Diego, California 92182-1233, USA. Jeffrey.Davis@mail.sdsu.edu
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Davis
authors.forename: Don M
authors.initials: DM
authors.lastname: Cottrell
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Zinn