Stokes‐Based 3D Polarimetric Analysis of Dipolar Near‐Fields

Characterizing and manipulating light polarization at the nanoscale is increasingly important in advancing nanophotonic technologies, particularly as photonic components shrink to subwavelength dimensions. Dipole emitters, which effectively model many nanoscale light sources such as quantum dots and single molecules, play a central role in understanding light–matter interactions. While their radiation patterns are well‐established, their polarization behavior remains nontrivial due to the complex interplay between radiative and evanescent field components. This intrinsic polarization mixing complicates the analysis of emitted light, particularly across the near‐to‐far‐field transition. In this work, the 3D Stokes formalism is used to systematically analyze the polarization properties of various dipole types, including linear, spinning, and chiral dipoles, from the near‐ to the far‐field. Following the deterministic nature of dipolar fields, 3D polarization features are reduced to the local intrinsic 2D frame, allowing an accessible evaluation of polarimetric features with respect to energy propagation.