Angle-Dispersive Metasurface for Axisymmetric Wavefront Manipulation over Continuous Incident Angles
| Autor: | Ying Li, Dajun Zhang, Xiong Wang, Guangsheng Deng, Jun Yang, Zhiping Yin, Weien Lai, Qi Zhu |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Wavefront Plane (geometry) Antisymmetric relation Rotational symmetry Phase (waves) General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Imaging phantom 0103 physical sciences Phase gradient Atomic physics 010306 general physics 0210 nano-technology Incidence (geometry) |
| Zdroj: | Physical Review Applied. 14 |
| ISSN: | 2331-7019 |
| Popis: | Axisymmetric wavefront manipulation is desirable for retroreflection, collimation, beam steering, and other applications in optics, but is not easily implemented with typical metasurfaces, which have an almost fixed phase gradient for various angles of incidence. This study uses meta-atoms that are tilted out of the plane to build an $a\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}g\phantom{\rule{0}{0ex}}l\phantom{\rule{0}{0ex}}e\ensuremath{-}d\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}s\phantom{\rule{0}{0ex}}p\phantom{\rule{0}{0ex}}e\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}s\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}v\phantom{\rule{0}{0ex}}e$ metasurface with the required antisymmetric phase gradient plus antisymmetric angular phase dispersion, for axisymmetric wavefront manipulation. Its performance is demonstrated in both simulation and experiment. |
| Databáze: | OpenAIRE |
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