Abstract

We propose a scattering-type nano-polarimeter for probing the local spin density with subwavelength spatial resolution via the spin-orbital interactions at the nanoscale. The nano-polarimeter is simple to operate and can be applied to a variety of asymmetric nanoprobes, allowing direct data retrieval using two point detectors. Moreover, this technique is not limited to the spin-density detection but can also be used for the measurement of any given polarization states of light, no matter whether it is a free-space propagating wave or nonpropagating wave bound in the near-field region of nanostructures.

© 2018 Optical Society of America

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