Metasurface integrated with double-helix point spread function and metalens for three-dimensional imaging

Nanophotonics

article

Chunqi Jin¹  Jihua Zhang³  Chunlei Guo¹ 

[1] The Guo China-US Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Chinese Academy of Sciences;University of Chinese Academy of Sciences;The Institute of Optics, University of Rochester

关键词: metasurface;    double-helix point spread function;    metalens;    three-dimensional imaging;   

DOI  :  10.1515/nanoph-2018-0216

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Metasurfaces are two-dimensional arrangements of antennas that control the propagation of electromagnetic waves with a subwavelength thickness and resolution. Previously, metasurfaces have been mostly used to obtain the function of a single optical element. Here, we demonstrate a plasmonic metasurface that represents the combination of a phase mask generating a double-helix point spread function (DH-PSF) and a metalens for imaging. DH-PSF has been widely studied in three-dimensional (3D) super-resolution imaging, biomedical imaging, and particle tracking, but the current DH-PSFs are inefficient, bulky, and difficult to integrate. The multielement metasurface, which we label as DH-metalens, enables a DH-PSF with transfer efficiency up to 70.3% and an ultrahigh level of optical system integration, three orders of magnitude smaller than those realized by conventional phase elements. Moreover, the demonstrated DH-metalens can work in broadband visible wavelengths and in multiple incident polarization states. Finally, we demonstrate the application of the DH-metalens in 3D imaging of point sources. These results pave ways for realizing integrated DH-PSFs, which have applications in 3D super-resolution microscopy, single particle tracking/imaging, and machine vision.

【 授权许可】

CC BY