Bethe-hole polarization analyser for the magnetic vector of light
Open Access
- 23 August 2011
- journal article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 2 (1), 451
- https://doi.org/10.1038/ncomms1430
Abstract
The nature of light as an electromagnetic wave with transverse components has been confirmed using optical polarizers, which are sensitive to the orientation of the electric field. Recent advances in nanoscale optical technologies demand their magnetic counterpart, which can sense the orientation of the optical magnetic field. Here we report that subwavelength metallic apertures on infinite plane predominantly sense the magnetic field of light, establishing the orientation of the magnetic component of light as a separate entity from its electric counterpart. A subwavelength aperture combined with a tapered optical fibre probe can also serve as a nanoscale polarization analyser for the optical magnetic field, analogous to a nanoparticle sensing the local electric polarization. As proof of its functionality, we demonstrate the measurement of a magnetic field orientation that is parallel to the electric field, as well as a circularly polarized magnetic field in the presence of a linearly polarized electric field.This publication has 42 references indexed in Scilit:
- Controlling the near-field oscillations of loaded plasmonic nanoantennasNature Photonics, 2009
- Metamaterials and the Landau–Lifshitz permeability argument: Large permittivity begets high-frequency magnetismProceedings of the National Academy of Sciences of the United States of America, 2009
- Electromagnetic wave transmission through a small hole in a perfect electric conductor of finite thicknessPhysical Review B, 2008
- Superlenses to overcome the diffraction limitNature Materials, 2008
- Negative Refractive Index at Optical WavelengthsScience, 2007
- Single Quantum Dot Coupled to a Scanning Optical Antenna: A Tunable SuperemitterPhysical Review Letters, 2005
- Metamaterials and Negative Refractive IndexScience, 2004
- Diffraction by a small aperture in conical geometry: Application to metal-coated tips used in near-field scanning optical microscopyPhysical Review E, 2002
- Local detection of the optical magnetic field in the near zone of dielectric samplesPhysical Review B, 2000
- Stehende Lichtwellen und die Schwingungsrichtung polarisirten LichtesAnnalen der Physik, 1890