Photonics Research, Volume. 11, Issue 7, 1326(2023)
Local characterization of the polarization state of 3D electromagnetic fields: an alternative approach
Fig. 1. Diagram of the focusing system (microscope objective) illustrating the reference coordinate systems and the variables involved in the process [44].
Fig. 2. Blue and orange solid lines represent the field amplitudes in, respectively, Eqs. (
Fig. 3. Bloch sphere diagram illustrating the state of homogeneous polarization
Fig. 4. (a) Representation of the
Fig. 5. Vector plots of the normal direction vector
Fig. 6. Experimental value obtained for the transverse Stokes parameters (top row) and local Stokes parameters (middle row) at the focal plane for a linearly polarized input field, with horizontal polarization. The local Stokes parameters obtained numerically are shown in the bottom row of the figure for comparison. The color code on the right-hand side applies to all the panels. The input beam has been produced with
Fig. 7. Experimental value obtained for the transverse Stokes parameters (top row) and local Stokes parameters (middle row) at the focal plane for a circularly polarized input field, with right-handed polarization (
Fig. 8. Experimental value obtained for the transverse Stokes parameters (top row) and local Stokes parameters (middle row) at the focal plane for a radially polarized input field. The local Stokes parameters obtained numerically are shown in the bottom row of the figure for comparison. The color code on the right-hand side applies to all the panels. The input beam has been produced with
Fig. 9. Experimental setup (see the main text for details). To produce a linearly polarized input field, QWP2 is removed, while it is replaced by the VR if radially, azimuthally, or spirally polarized input fields are required.
Fig. 10. Experimental data management pipeline. See the main text for a detailed explanation of each processing block. FFSP, forward free space propagation; BFSP, backward free space propagation;
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Rosario Martínez-Herrero, David Maluenda, Marcos Aviñoá, Artur Carnicer, Ignasi Juvells, Ángel S. Sanz. Local characterization of the polarization state of 3D electromagnetic fields: an alternative approach[J]. Photonics Research, 2023, 11(7): 1326
Category: Physical Optics
Received: Feb. 27, 2023
Accepted: May. 17, 2023
Published Online: Jun. 29, 2023
The Author Email: Ángel S. Sanz (a.s.sanz@fis.ucm.es)