Fig. 2: Experimental results.
From: In situ fully vectorial tomography and pupil function retrieval of tightly focused fields
a The reference VPF (top left), the reconstructed ones (top right), and the reconstructed PSFvec in 3D space with 2D projections (middle and bottom rows.) for the radially polarized beam. For visualization purpose, only regions with significant intensity are shown in the tomography, with volume size (3.84 μm)3. b The predicted and measured two-channel PSFs without phase encoding at different depths for the radially polarized beam. The blue and yellow lines indicate intensity profiles along the x and y directions, respectively. Opaque lines represent the predicted PSFs, while translucent lines represent the measured ones. The measured PSFs are processed by low-pass filtering with the objective’s bandwidth since the raw data suffers from Poisson noise (Supplementary Section 5.4). c, d are for the azimuthally polarized beam.
