198 citations · 1.3k across the 41 of their papers we have counts for
6 papers · 1 filter
An upper limit to the orbital angular momentum of a vortex-carrying ultrashort pulse
Miguel A. Porras
The magnitude of the topological charge of the vortex of a ring-shaped pulse is found to be limited by the squared mean frequency of the pulse spectrum at the ring relative to its…
Spontaneous localization in self-focusing of ultrashort light pulses
Miguel A. Porras
This is a summary directed to PhD students of the research work conducted on the problem of the production of "light bullets", or multidimensional wave packets that propagate witho…
The three-dimensional carrier-envelope-phase map of focused few-cycle pulsed Gaussian beams
M. A. Porras, Zoltán L. Horváth, Balázs Major
We derive an analytical expression that describes the complete three-dimensional carrier-envelope phase (CEP) distribution of in the focal volume of ultrashort pulsed Gaussian beam…
Optical vortex trapping and annihilation by means of nonlinear Bessel beams in nonlinearly absorbing media
José L. García Riquelme, Francisco Ramos, Miguel A. Porras
In nonlinear Kerr media at intensities such that multiphoton absorption is significant, a vortex of topological charge m in the center of a high-order nonlinear Bessel beam (NBB) c…
Self-trapped pulsed beams with finite power in pure cubic Kerr media excited by time-diffracting, space-time beams
Miguel A. Porras
We study the nonlinear propagation of diffraction-free, space-time wave packets, also called time-diffracting beams because their spatiotemporal structure reproduces diffraction in…
Time-diffracting beams: On their nature, diffraction-free propagation as needles of light, and nonlinear generation
Miguel A. Porras
We investigate on the properties of the recently introduced time-diffracting (TD) beams in free space. They are shown to be paraxial and quasi-monochromatic realizations of localiz…