Focused X-shaped pulses.
The space-time focusing of a (continuous) succession of localized X-shaped pulses is obtained by suitably integrating over their speed, i.e., over their axicon angle, thus generalizing a previous (discrete) approach. New superluminal wave pulses are first constructed and then tailored so that they become temporally focused at a chosen spatial point, where the wave field can reach very high intensities for a short time. Results of this kind may find applications in many fields, besides electromagnetism and optics, including acoustics, gravitation, and elementary particle physics.
Department of Microwaves and Optics, Faculty of Electrical Engineering, Universidade Estadual de Campinas, Campinas, SP, Brazil. mzamboni@dmo.fee.unicamp.br
Michel
M
Zamboni-Rached
Amr M
AM
Shaarawi
Erasmo
E
Recami