10 citations · 11 across the 7 of their papers we have counts for
7 papers · 1 filter
Non-linear bistability in pulsed optical traps
Alex J. Vernon, Francisco J. Rodríguez-Fortuño, Anatoly V. Zayats
Optical trapping, also known as optical tweezing or optical levitation, is a technique that uses highly focused laser beams to manipulate micro- and nanoscopic particles. In optica…
Electromagnetic symmetry dislocations
Alex J. Vernon, Sebastian Golat, Francisco J. Rodríguez-Fortuño
Singular optics aims to understand and manipulate light's topological defects, pioneered by the discovery that phase vortex lines, strands of destructive interference, naturally oc…
The electromagnetic symmetry sphere: a framework for energy, momentum, spin and other electromagnetic quantities
Sebastian Golat, Alex J. Vernon, Francisco J. Rodríguez-Fortuño
Electromagnetic quantities such as energy density, momentum, spin, and helicity bring meaning and intuition to electromagnetism and possess intricate interrelations, particularly p…
A decomposition of light's spin angular momentum density
Alex J. Vernon, Sebastian Golat, Claire Rigouzzo +2
Light carries intrinsic spin angular momentum (SAM) when the electric or magnetic field vector rotates over time. A familiar vector equation calculates the direction of light's SAM…
Non-Diffracting Polarisation Features around Far-Field Zeros of Electromagnetic Radiation
Alex J. Vernon, Andrew Kille, Francisco J. Rodríguez-Fortuño +1
Light from any physical source diffracts over space, as spherical wavefronts grow and energy density is spread out. Diffractive effects pose fundamental limits to light-based techn…
3D Zeros in Electromagnetic Fields
Alex J. Vernon, Mark R. Dennis, Francisco J. Rodríguez-Fortuño
We present a study of 3D electromagnetic field zeros, uncovering their remarkable characteristic features and propose a classifying framework. These are a special case of general d…
Polarisation Control of Nanoantenna Cold Spots
Alexander J. Vernon, Francisco J. Rodríguez-Fortuño
Cold spots are sub-wavelength regions which might emerge near a plasmonic nanoantenna, should one or more components of some far-field illumination cancel out with scattered light.…