title: Bessel pulse beams and focus wave modes.
abstract: Free-space propagation of ultrashort pulses is investigated. Space-time couplings are reduced for a particular form of beams that is termed a pulse beam, or a type 3 pulsed beam. General conditions for the formation of pulse beams in the paraxial approximation are presented. The free-space propagation of spatially localized ultrashort laser pulses is investigated. This treatment is based on a particular pulsed form of the well-known Bessel beam, which is termed a Bessel pulse beam. The connections with focus wave modes and X waves are discussed.
authors.affiliation: Department of Physical Optics, School of Physics, University of Sydney, NSW, Australia. colin@physics.usyd.edu.au
authors.forename: C J
authors.initials: CJ
authors.lastname: Sheppard