Optimization of a plasmonic lens structure for maximum optical vortices induced on Weyl semimetal surface states.

ABSTRACT: Optical vortices have a topologically charged phase singularity and zero intensity distribution in the centre. Optical vortex creation is regarded as a significant means for information transmission for applications in quantum computing, encryption, optical communication, etc. In this study, using finite-difference time-domain (FDTD) simulation, we calculated the electric field intensity and phase distribution of 2D lattices of optical vortices generated from various polygonal plasmonic lens structures using surface states of a Weyl semimetal (MoTe₂). It was shown that a hexagonal lens is the best performing plasmonic lens. Further, we posited here a unified mathematical formulation for optical electrical field and phase distribution in the near field for any polygonal pl

SUBMITTER: Banerjee R 

PROVIDER: S-EPMC11446401 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature