Polarization-Selective Holographic Metasurface For Creating Cylindrical Vector Beams

IEEE Photonics Journal

Jiannong Chen¹  Jing Han¹  Qinfeng Xu¹ 

[1] School of Physics and Optoelectronic Engineering, Ludong University, Yantai, China;

关键词: Metasurfaces;    cylindrical vector beams;   

DOI  :  10.1109/JPHOT.2019.2922218

来源: DOAJ

【 摘 要 】

Generalized cylindrical vector beams (GCVB) are spatially polarization inhomogeneous. It could be considered as a combination of a radially polarized beam and an azimuthally polarized beam with different weighting factors. Here, we report a holographic metasurface patterned on a gold film layer for generating a GCVB. The nanostructure is a superposition of an individually oriented nanoslit array that determines the polarization distribution of the GCVB and a binary fork hologram that eliminates the additional Pancharatnam-Berry phase resulted from the circularly polarized incident plane beam. The behavior of a single nanoslit with specific parameters as a nanopolarizer and that of the overall holographic metasurface when illuminated by a circularly polarized plane beam are simulated and verified. A GCVB with plane wavefront and doughnut-shaped intensity distribution is experimentally produced using this holographic metasurface. The polarization state of the GCVB is also detected and confirmed.

【 授权许可】

Unknown