TY - JOUR
T1 - Retrieving the Size of Deep-Subwavelength Objects via Tunable Optical Spin-Orbit Coupling
AU - Xi, Zheng
AU - Urbach, H. P.
PY - 2018/6/19
Y1 - 2018/6/19
N2 - 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.
AB - 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.
UR - http://resolver.tudelft.nl/uuid:1e2063dc-2ed2-4ec8-a933-481573608fb4
UR - http://www.scopus.com/inward/record.url?scp=85048981816&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.120.253901
DO - 10.1103/PhysRevLett.120.253901
M3 - Article
AN - SCOPUS:85048981816
SN - 0031-9007
VL - 120
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
M1 - 253901
ER -