31 citations · 82 across the 7 of their papers we have counts for
7 papers
Microscopic analysis of spin-momentum locking on a geometric phase metasurface
Fernando Lorén, Gian L. Paravicini-Bagliani, Sudipta Saha +4
We revisit spin-orbit coupling in a plasmonic Berry metasurface comprised of rotated nanoapertures, which is known to imprint a robust far-field polarization response. We present a…
Transverse spin and transverse momentum in structured optical fields
Sudipta Saha, Nirmalya Ghosh, Subhasish Dutta Gupta
It has been recently recognized that in addition to the conventional longitudinal angular momentum, structured (inhomogeneous) optical fields exhibit helicity-independent transvers…
Experimental probe of weak value amplification and geometric phase through the complex zeroes of the response function
Mandira Pal, Sudipta Saha, Athira B S +2
The extraordinary concept of weak value amplification has attracted considerable attention for addressing foundational questions in quantum mechanics and for metrological applicati…
Transverse spin in scattering of focused radially and azimuthally polarized vector beams
Ankit Kumar Singh, Sudipta Saha, Subhasish Dutta Gupta +1
We study the effect of focusing of the radially and azimuthally polarized vector beams on the spin angular momentum (SAM) density and Poynting vector of scattered waves from a Mie…
Effects of mode mixing and avoided crossings on the transverse spin in a metal-dielectic-metal sphere
Sudipta Saha, Ankit Kumar Singh, Nirmalya Ghosh +1
We study transverse spin in a sub-wavelength metal-dielectric-metal (MDM) sphere when the MDM sphere exhibits avoided crossing due to hybridization of the surface plasmon with the…
Consequences of nonreciprocity in reflection from a truncated spatial Kramers-Kronig medium
Sudipta Saha, K. V. Sowmya Sai, Nirmalya Ghosh +1
We study the truncated Kramers-Kronig (KK) medium to reveal the effects of nonreciprocity in reflection on the scattering and the wave guiding properties. We focus on the simplest…
Transverse spin and transverse momentum in scattering of plane waves
Sudipta Saha, Ankit K. Singh, Subir K. Ray +3
We study the near field to the far field evolution of spin angular momentum (SAM) density and the Poynting vector of the scattered waves from spherical scatterers. The results show…