Space-time wave packets (STWPs) constitute a broad class of pulsed optical fields that are
rigidly transported in linear media without diffraction or dispersion, and are therefore …

Although self-reconstructing beams have been the focus of many scientific studies over the
past decade, hardly anything is known about their propagation and self-healing behaviour in …

Needle beams are highly attractive for applications which take advantage from a spatial and
temporal localization of photons. High intensities, high resolution and extended depth of …

We present the generation of arbitrary order Bessel beams at 0.3 THz through the
implementation of suitably designed axicons based on 3D printing technology. The helical …

The group velocity of 'space-time'wave packets–propagation-invariant pulsed beams
endowed with tight spatio-temporal spectral correlations–can take on arbitrary values in free …

We present direct measurements of the spatiotemporal electric field of an ultrashort Bessel-X
pulse generated using a conical lens (axicon). These measurements were made using the …

We propose a simple method for the detection of Bessel beams with arbitrary radial and
azimuthal indices, and then demonstrate it in an all-digital setup with a spatial light …

Light carrying an orbital angular momentum (OAM) displays an optical phase front rotating in
space and time and a vanishing intensity, a so-called vortex, in the center. Beyond …

We numerically investigate the spatiotemporal structure of Bessel beams generated with
spatial light modulators (SLMs). Grating-like phase masks enable the spatial filtering of …

The recently introduced concept of radially non-oscillating, temporally stable ultrashort-
pulsed Bessel-like beams we referred to as needle beams is generalized to a particular …