Design of broadband terahertz vector and vortex beams: I. Review of materials and components
Nikolay V. Petrov, Bogdan Sokolenko, Maksim S. Kulya, Andrei Gorodetsky, Aleksey V. Chernykh
Abstract
In this paper, we review the existing approaches for vortex and vector beam shaping and generation in the terahertz frequency range. The particular focus of this review is on the possibility of homogeneous topological charge formation in the ultra-wide spectral interval inherent to ultrashort terahertz pulses. We review the available materials and components, analyse proposed and potentially possible solutions for broadband terahertz vortex and vector beam shaping, compare all developed approaches, and put forward a unified concept for constructing passive shapers of such beams from the existing component base.
Topics & Concepts
Terahertz radiationBroadbandBeam (structure)PhysicsOpticsVortexComponent (thermodynamics)HomogeneousFocus (optics)Computer scienceThermodynamicsOrbital Angular Momentum in OpticsTerahertz technology and applicationsPlasmonic and Surface Plasmon Research