Pancharatnam-Berry phase induced spin-selective transmission in herringbone dielectric metamaterials

Abstract

Manipulating the polarisation of light is crucial for sensing and imaging applications. One such aspect in particular is selective transmission of one circular polarisation (spin) when light is transmitted through a medium or a device. However, most present methods of achieving this have relatively low efficiency and selectivity, whilst high selectivity examples rely on lossy and complex three-dimensional helical or multilayer structures. Here, we propose a dielectric metamaterial approach for achieving spin-selective transmission of electromagnetic waves, utilizing spin-controlled constructive or destructive interference between two Pancharatnam-Berry (PB) phases in conjunction with propagative dynamic phase. The dielectric metamaterial, consisting of monolithic silicon herringbone structures, exhibits a broadband operation in the terahertz regime whilst obtaining a spin-selective efficiency upwards of 60%. Such a device is robust and is not easily degraded by errors in fabrication.

arXiv comment15 pages, 4 figures, Advanced Materials, first published: 14 September 2016

References in corpus (8)

• Negative Index of Refraction in Optical Metamaterials
• Dielectric Optical Cloak
• Demonstration of Near-Infrared Negative-Index Materials
• Epsilon-Near-Zero (ENZ) Metamaterials and Electromagnetic Sources: Tailoring the Radiation Phase Pattern
• Circular conversion dichroism in planar chiral metamaterials
• An advanced Jones calculus for the classification of periodic metamaterials
• Giant gyrotropy due to electromagnetic coupling
• Terahertz metamaterial with asymmetric transmission

Cited by in corpus (4)

• Planar chiral metasurfaces with maximal tunable chiroptical response driven by bound states in the continuum
• Arbitrary Polarization Conversion Dichroism Metasurfaces for All-in-One Full Poincaré Sphere Polarizers
• High-efficiency and full-space manipulation of electromagnetic wave-fronts with metasurfaces
• All-dielectric active photonics driven by bound states in the continuum