Structured light from lasers

A Forbes - Laser & Photonics Reviews, 2019 - Wiley Online Library
Structured light is derived from the ability to tailor light, usually referring to the spatial control
of its amplitude, phase, and polarization. Although a venerable topic that dates back to the …

Vortex laser arrays with topological charge control and self-healing of defects

M Piccardo, M de Oliveira, A Toma, V Aglieri… - Nature …, 2022 - nature.com
Geometric arrays of vortices found in various systems owe their regular structure to mutual
interactions within a confined system. In optics, such vortex crystals may form spontaneously …

High-purity orbital angular momentum states from a visible metasurface laser

H Sroor, YW Huang, B Sephton, D Naidoo, A Vallés… - Nature …, 2020 - nature.com
Orbital angular momentum (OAM) from lasers holds promise for compact, at-source
solutions for applications ranging from imaging to communications. However, conjugate …

Cascaded metasurfaces for high-purity vortex generation

F Mei, G Qu, X Sha, J Han, M Yu, H Li, Q Chen… - Nature …, 2023 - nature.com
We introduce a new paradigm for generating high-purity vortex beams with metasurfaces. By
applying optical neural networks to a system of cascaded phase-only metasurfaces, we …

Creation and detection of vector vortex modes for classical and quantum communication

B Ndagano, I Nape, MA Cox… - Journal of Lightwave …, 2017 - ieeexplore.ieee.org
Vector vortex beams are structured states of light that are nonseparable in their polarisation
and spatial mode, they are eigenmodes of free-space and many fiber systems, and have the …

Advances in orbital angular momentum lasers

A Forbes - Journal of Lightwave Technology, 2022 - ieeexplore.ieee.org
As we celebrate 30 years since light's orbital angular momentum (OAM) was connected to its
spatial structure, we reflect on the advances made in fundamental science and applications …

Complex vectorial optics through gradient index lens cascades

C He, J Chang, Q Hu, J Wang, J Antonello, H He… - Nature …, 2019 - nature.com
Graded index (GRIN) lenses are commonly used for compact imaging systems. It is not
widely appreciated that the ion-exchange process that creates the rotationally symmetric …

Beyond the display: phase-only liquid crystal on silicon devices and their applications in photonics

G Lazarev, PJ Chen, J Strauss, N Fontaine… - Optics express, 2019 - opg.optica.org
Existing for almost four decades, liquid crystal on Silicon (LCOS) technology is rapidly
growing into photonic applications. We review the basics of the technology, from the wafer to …

Modal analysis of structured light with spatial light modulators: a practical tutorial

J Pinnell, I Nape, B Sephton, MA Cox… - JOSA A, 2020 - opg.optica.org
A quantitative analysis of optical fields is essential, particularly when the light is structured in
some desired manner, or when there is perhaps an undesired structure that must be …

Generating controllable Laguerre-Gaussian laser modes through intracavity spin-orbital angular momentum conversion of light

D Wei, Y Cheng, R Ni, Y Zhang, X Hu, S Zhu… - Physical Review Applied, 2019 - APS
The rapid developments in orbital-angular-momentum-carrying Laguerre-Gaussian (LG l 0)
modes in recent years have facilitated progress in optical communication …