Print Email Facebook Twitter Retrieving the Size of Deep-Subwavelength Objects via Tunable Optical Spin-Orbit Coupling Title Retrieving the Size of Deep-Subwavelength Objects via Tunable Optical Spin-Orbit Coupling Author Xi, Z. (TU Delft ImPhys/Optics) Urbach, Paul (TU Delft ImPhys/Optics) Date 2018-06-19 Abstract We propose a scheme to retrieve the size parameters of a nanoparticle on a glass substrate at a scale much smaller than the wavelength. This is achieved by illuminating the particle using two plane waves to create rich and nontrivial local polarization distributions, and observing the far-field scattering pattern into the substrate. By using this illumination to control the induced complex dipole moment, the exponential decay of power radiated into the supercritical region, as well as directional scattering due to spin-orbit coupling can be exploited to retrieve the particle's shape, size, and position directly from the far-field scattering with high sensitivity and without the need for a complicated and time-consuming optimization algorithm. Our method brings about a far-field superresolution nanometrology scheme based on the interaction of vectorial light with nanoparticles. To reference this document use: http://resolver.tudelft.nl/uuid:1e2063dc-2ed2-4ec8-a933-481573608fb4 DOI https://doi.org/10.1103/PhysRevLett.120.253901 ISSN 0031-9007 Source Physical Review Letters, 120 (25) Part of collection Institutional Repository Document type journal article Rights © 2018 Z. Xi, Paul Urbach Files PDF PhysRevLett.120.253901.pdf 1.35 MB Close viewer /islandora/object/uuid:1e2063dc-2ed2-4ec8-a933-481573608fb4/datastream/OBJ/view