期刊
ADVANCED PHOTONICS
卷 1, 期 3, 页码 -出版社
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.AP.1.3.036001
关键词
optics; nanophotonics; metasurfaces; Mie-resonances; three-dimensional imaging; point-spread function engineering
类别
资金
- German Research Foundation within the Emmy-Noether program
- German Federal Ministry of Education and Research (BMBF) [13N14147, 03ZZ0434]
- University of the Chinese Academy of Sciences' International Cooperation Training Program for Doctoral Students, Fraunhofer Program
- SPP Tailored Disorder [STA 1426/1-1, STA 1426/2-1, PE 1524/10-2]
Ultrathin metasurfaces have shown the capability to influence all aspects of light propagation. This has made them promising options for replacing conventional bulky imaging optics while adding advantageous optical properties or functionalities. We demonstrate that such metasurfaces can also be applied for single-lens three-dimensional (3-D) imaging based on a specifically engineered point-spread function (PSF). Using Huygens' metasurfaces with high transmission, we design and realize a phase mask that implements a rotating PSF for 3-D imaging. We experimentally characterize the properties of the realized double-helix PSF, finding that it can uniquely encode object distances within a wide range. Furthermore, we experimentally demonstrate wide-field depth retrieval within a 3-D scene, showing the suitability of metasurfaces to realize optics for 3-D imaging, using just a single camera and lens system.
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