TY - JOUR
T1 - Phyllotaxis-inspired nanosieves with multiplexed orbital angular momentum
AU - Jin, Zhongwei
AU - Janoschka, David
AU - Deng, Junhong
AU - Ge, Lin
AU - Dreher, Pascal
AU - Frank, Bettina
AU - Hu, Guangwei
AU - Ni, Jincheng
AU - Yang, Yuanjie
AU - Li, Jing
AU - Yu, Changyuan
AU - Lei, Dangyuan
AU - Li, Guixin
AU - Xiao, Shumin
AU - Mei, Shengtao
AU - Giessen, Harald
AU - zu Heringdorf, Frank Meyer
AU - Qiu, Cheng Wei
N1 - Funding Information:
This work was supported by the National Research Foundation, Prime Minister's Office, Singapore under Competitive Research Program Award NRF-CRP22-2019–0006; the grant (R-261–518-004-720) from Advanced Research and Technology Innovation Centre (ARTIC); the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) –Project-ID 278162697–SFB 1242; and ERC Advanced Grant Complex Plan, BMBF, DFG and BW-Stiftung; and the Research Grants Council of Hong Kong (CRF Grant No. C6013-18G) and the City University of Hong Kong (Project No. 9610434); and the support from A*STAR under its AME YIRG Grant (Award No. A2084c0172).
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - Nanophotonic platforms such as metasurfaces, achieving arbitrary phase profiles within ultrathin thickness, emerge as miniaturized, ultracompact and kaleidoscopic optical vortex generators. However, it is often required to segment or interleave independent sub-array metasurfaces to multiplex optical vortices in a single nano-device, which in turn affects the device’s compactness and channel capacity. Here, inspired by phyllotaxis patterns in pine cones and sunflowers, we theoretically prove and experimentally report that multiple optical vortices can be produced in a single compact phyllotaxis nanosieve, both in free space and on a chip, where one meta-atom may contribute to many vortices simultaneously. The time-resolved dynamics of on-chip interference wavefronts between multiple plasmonic vortices was revealed by ultrafast time-resolved photoemission electron microscopy. Our nature-inspired optical vortex generator would facilitate various vortex-related optical applications, including structured wavefront shaping, free-space and plasmonic vortices, and high-capacity information metaphotonics.
AB - Nanophotonic platforms such as metasurfaces, achieving arbitrary phase profiles within ultrathin thickness, emerge as miniaturized, ultracompact and kaleidoscopic optical vortex generators. However, it is often required to segment or interleave independent sub-array metasurfaces to multiplex optical vortices in a single nano-device, which in turn affects the device’s compactness and channel capacity. Here, inspired by phyllotaxis patterns in pine cones and sunflowers, we theoretically prove and experimentally report that multiple optical vortices can be produced in a single compact phyllotaxis nanosieve, both in free space and on a chip, where one meta-atom may contribute to many vortices simultaneously. The time-resolved dynamics of on-chip interference wavefronts between multiple plasmonic vortices was revealed by ultrafast time-resolved photoemission electron microscopy. Our nature-inspired optical vortex generator would facilitate various vortex-related optical applications, including structured wavefront shaping, free-space and plasmonic vortices, and high-capacity information metaphotonics.
KW - Free-space
KW - Phyllotaxis vortex nanosieve
KW - Plasmonic vortices
KW - Ultrafast time-resolved
UR - http://www.scopus.com/inward/record.url?scp=85117799834&partnerID=8YFLogxK
U2 - 10.1186/s43593-021-00005-9
DO - 10.1186/s43593-021-00005-9
M3 - Journal article
AN - SCOPUS:85117799834
SN - 2097-1710
VL - 1
JO - eLight
JF - eLight
IS - 1
M1 - 5
ER -