Optical spatiotemporal vortices

C Wan, A Chong, Q Zhan - eLight, 2023 - Springer
Spatiotemporal vortices of light, featuring transverse orbital angular momentum (OAM) and
energy circulation in the spatiotemporal domain, have received increasing attention recently …

Spatiotemporal sculpturing of light: a tutorial

Q Zhan - Advances in Optics and Photonics, 2024 - opg.optica.org
Spatiotemporal sculpturing of light pulses with sophisticated structures on demand is one
major goal of the everlasting pursuit of ultrafast information transmission and processing as …

[HTML][HTML] Design of broadband terahertz vector and vortex beams: I. Review of materials and components

NV Petrov, B Sokolenko, MS Kulya… - Light: Advanced …, 2022 - light-am.com
In this paper, we review the existing approaches for vortex and vector beam shaping and
generation in the terahertz frequency range. The particular focus of this review is on the …

[HTML][HTML] Design of broadband terahertz vector and vortex beams: II. Holographic assessment

NV Petrov, B Sokolenko, MS Kulya… - Light: Advanced …, 2022 - light-am.com
In this paper, we demonstrate the capabilities of the terahertz pulse time-domain holography
in visualisation, simulation, and assessment of broadband THz vortex beam formation …

Ghost imaging via spectral multiplexing in the broadband terahertz range

A Ismagilov, A Lappo-Danilevskaya, Y Grachev… - JOSA B, 2022 - opg.optica.org
A method is proposed for accelerating measurements for ghost imaging reconstruction of
objects using spectral multiplexing of speckle patterns formed by broadband terahertz (THz) …

Single-scan multiplane phase retrieval with a radiation of terahertz quantum cascade laser

A Chopard, E Tsiplakova, N Balbekin… - Applied Physics B, 2022 - Springer
Terahertz phase retrieval from a set of axially separated diffractive intensity distributions is a
promising single-beam computational imaging technique that ensures the obtention of high …

Overcoming the trade-off between signal-to-noise ratio and resolution in holographic registration of pulsed terahertz Gauss–Bessel beams

EG Tsiplakova, YV Grachev, NV Petrov - Applied Physics Letters, 2024 - pubs.aip.org
The measurement of the spatial distribution of the nearly monocyclic terahertz (THz) fields by
a raster scanning diaphragm is the widely used approach in THz pulse time-domain …

Terahertz referenceless wavefront sensing by means of computational shear-interferometry

M Agour, C Fallorf, F Taleb, E Castro-Camus… - Optics …, 2022 - opg.optica.org
In this contribution, we demonstrate the first referenceless measurement of a THz wavefront
by means of shear-interferometry. The technique makes use of a transmissive Ronchi phase …

Countermeasure to cell dehydration caused terahertz near-field scanning image deterioration

Z Li, X Lu, T Chang, D Wei, HL Cui, S Yan - Spectrochimica Acta Part A …, 2024 - Elsevier
Most biomedical applications of terahertz (THz) imaging are based on distinguishing the
dielectric differences of tissues or cells in the THz band. But changes in bio-sample …

Ultrafast electron radiography for the evolution of electric field generated from a tungsten wire by intense laser irradiation

Z Shu, L Chen, Y Zhou, S Qiao - Radiation Effects and Defects in …, 2024 - Taylor & Francis
In this work, the transient electric field generated by a tungsten wire with a 100 μm diameter
after the irradiation by a 6.4× 10 13 W/cm 2 laser pulse has been investigated utilizing …