Enhancing the Goos-Hänchen and spin-Hall shifts in planar and spherical structures through complex-frequency excitations

R Ali, TPM Alegre, GS Wiederhecker - Physical Review B, 2024 - APS
The scattering of an electromagnetic field oscillating in a complex-frequency plane is known
to capture and release energy within a lossless cavity, yielding virtual loss and virtual gain …

Enhanced Spin Hall Shift by Multipoles of Different Orders in Spherical Particles

R Li, D Gao, L Gao - Photonics, 2023 - mdpi.com
The spin–orbit interaction of light is universal in the process of light scattering, and an
important aspect is the spin Hall effect. The spin Hall effect of light also exists in a three …

Enantioselective transport of chiral spheres using focused femtosecond laser pulses

R Ali, Y Wu - Optics Express, 2023 - opg.optica.org
Optical tweezers are commonly used for manipulating chiral particles by tailoring the
properties of the electromagnetic field or of the particles themselves. Non-linearity provides …

Wave-Guided Surface Plasmonic Resonance Induced Giant and Tunable Photonic Spin Hall Effect with Polarization Mode Control

MN Baitha, Y Kim, HJ Chun, K Kim - Plasmonics, 2024 - Springer
The photonic spin Hall effect (PSHE) at the optical interface is a polarization-dependent
phenomenon of incident light. The described methodology is a novel strategy for controlling …

Resonant helicity mixing of electromagnetic waves propagating through matter

J Lasa-Alonso, J Olmos-Trigo, C Devescovi… - Physical Review …, 2023 - APS
Dual scatterers preserve the helicity of an incident field, whereas antidual scatterers flip it
completely. In this setting of linear electromagnetic scattering theory, we provide a …

Measurement of surface chirality at near-normal incidence

U Baishya, NK Viswanathan - Applied Physics Letters, 2023 - pubs.aip.org
The chirality of a medium is typically measured either by transmitting a beam of light through
it or by single or multiple interface reflection at large and/or special angles of incidence. We …

Tuning Longitudinal and Transverse Beam Shifts in Scattered Partially Decomposed Field by Arbitrary-Sized Spheres

R Ali, S Iqbal, TP Alegre, GS Wiederhecker - Gustavo S., Tuning … - papers.ssrn.com
When a light beam scatters at an interface between two media, the scattering plane
experiences both longitudinal and transverse shifts due to the momentum exchange …