Print Email Facebook Twitter Fully controlled photonic spin in highly confined optical field Title Fully controlled photonic spin in highly confined optical field Author Zhang, Shuoshuo (Shandong University of Technology) Fu, Shenggui (Shandong University of Technology) Zhang, Huanian (Shandong University of Technology) Ge, Xiaolu (Shandong University of Technology) Bai, Zhidong (Shandong University of Technology) Lyu, Yudong (Shandong University of Technology) Zhao, Rui (Shandong University of Technology) Man, Z. (TU Delft ImPhys/Optics; Shandong University of Technology) Date 2019 Abstract As an intrinsic attribute of light, the spin angular momentum (SAM) of photons has aroused considerable attention because of the fascinating properties emerging from light–matter interactions. We show that a diffraction-limited focal field with a steerable photonic spin structure in three dimensions can be produced under a 4π microscopic system. This is achieved by focusing two counter-propagating configurable vector beams produced in the coherent superposition of three different beams with x-polarization, y-polarization, and radial-polarization. By altering the amplitude factors of these resultant beams, the ratios between the three mutually orthogonal polarized components can be freely tuned within the focal plane, thereby allowing dynamic control over the spin orientation and ellipticity of the tightly focused optical field. The results demonstrated in this paper may find applications in spin-controlled nanophotonics. Subject Responsible Research & Innovation; framework developmentliterature studyimplementationdocument analysis To reference this document use: http://resolver.tudelft.nl/uuid:2a5d8818-2d52-4a25-810b-c14d108baa2c DOI https://doi.org/10.1364/OE.27.033621 ISSN 1094-4087 Source Optics Express, 27 (23), 33621-33633 Part of collection Institutional Repository Document type journal article Rights © 2019 Shuoshuo Zhang, Shenggui Fu, Huanian Zhang, Xiaolu Ge, Zhidong Bai, Yudong Lyu, Rui Zhao, Z. Man Files PDF oe_27_23_33621.pdf 1.54 MB Close viewer /islandora/object/uuid:2a5d8818-2d52-4a25-810b-c14d108baa2c/datastream/OBJ/view