Spatial-temporal Gauss-Laguerre waves in dispersive media.
A family of dispersionless and diffractionless spatial-temporal Gauss-Laguerre waves propagating in dispersive linear and transparent media is introduced. Contrary to pulsed Bessel beams and envelope-X waves recently studied in media with normal dispersion, these spatiotemporal Gauss-Laguerre beams may exist both in the normal and anomalous dispersion spectral regions of the medium.
Longhi
Stefano
S
Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica and IFN-CNR, Politecnico di Milano, Piazza L. da Vinci 32, I-20133 Milan, Italy.