Optical X wave communications

Localized Waves: A Historical and Scientific Introduction

“…To confine ourselves to electromagnetism, let us recall the present-day studies on electromagnetic tweezers [26,27,28,29], optical (or acoustic) scalpels, optical guiding of atoms or (charged or neutral) corpuscles [30,31,32], optical litography [33,26], optical (or acoustic) images [34], communications in free space [35,36,19,37], remote optical alignment [38], optical acceleration of charged corpuscles, and so on.…”

Cylindrically polarized nondiffracting optical pulses

“…Polychromatic superpositions of Bessel beams, commonly called X-waves, in fact, have been studied quite extensively in the past years [31], and very recently, OAM-carrying X-waves have been proposed [30]. Firstly introduced in acoustics [32,33], X-waves have provided many interesting results in many different areas physics, like nonlinear optics [34,35], condensed matter [36], quantum optics [37], integrated optics [38,39] and optical communications [40]. We believe that the interplay between the nondiffracting character typical of X-waves and the properties of cylindrically polarized beams can open new possibilities for fundamental and applied research.…”

Observation of the angular momentum transfer in the Mie regime using Mathieu beams

“…Numerous applications have been suggested and also implemented in several different fields of science and technology. [3][4][5][6] PIOFs are a consequence of the separability of Helmholtz equation in coordinate systems with longitudinal symmetry. When the transverse field of a beam is described only by he transverse coordinates, then it is natural to expect that its transverse profile will ideally propagate without experiencing any change, other than the associated phase factor of the propagation itself.…”