Rotating-PSF imaging via spiral phase engineering can localize point sources over large focal depths in a snapshot mode. This letter presents a full vector-field analysis of the rotating-PSF imager that quantifies the PSF signature of the polarization state of the imaging light. For sufficiently high image-space numerical apertures, there can be significant wave-polarization dependent contributions to the overall PSF, which would allow one to jointly localize and sense the polarization state of light emitted by point sources in a 3D field.
@article{arxiv.1412.6476,
title = {3D Source Localization and Polarimetry using High Numerical Aperture Imaging with Rotating PSF},
author = {Zhixian Yu and Sudhakar Prasad},
journal= {arXiv preprint arXiv:1412.6476},
year = {2014}
}