title: Dispersion-compensating beam shaper for femtosecond optical vortex beams.
abstract: A beam shaper suitable for sub-20 fs pulses based on a prism pair and a computer-generated hologram was developed to produce vortex beams. Comparatively high throughput and the ability to tune the group-velocity dispersion make this shaper suitable for pulses from femtosecond oscillators and amplifiers and where there is a need for additional postchirp or prechirp compensation.
authors.affiliation: Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA. A.Schwarz@gmx.com
authors.forename: Alexander
authors.initials: A
authors.lastname: Schwarz
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Rudolph