https://doi.org/10.1051/epjconf/202023805002
Resonant diffraction gratings with polarization-dependent efficiencies
Technische Universität Ilmenau, Center for Micro- and Nanotechnologies, FG Technische Optik, Am Helmholtzring 1, 98693 Ilmenau
∗ e-mail: julian.wuester@tu-ilmenau.de
Published online: 20 August 2020
Subwavelength-structures with different fill factors in the lateral dimensions result in unique phase shifts for the different polarization states of transmitted light.
By using this additional degree of freedom for diffractive optical elements, we yield additional functionalities for compact optical systems with DOEs.
As a fully operable example we present a binary subwavelength-grating which acts as a polarizing beamsplitter for TE- and TM-polarization over a wide range of incidence angles. We show our design approach, the manufacturing process with Soft-UV-Nanoimprint-Technology, as well as experimental results. We will also lay out possibilities for the design and application of multilevel polarization-functionalized gratings.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
