期刊
LASER & PHOTONICS REVIEWS
卷 10, 期 5, 页码 791-798出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201500328
关键词
asymmetric light transmission; metasurface; metamaterial; angle-insensitive device; plasmonics
资金
- NSF Materials Research Science and Engineering Center (MRSEC) program [DMR 1120923]
- Ohio Department of Development (ODOD) Ohio Research Scholar Program (Northwest Ohio) [TECH 09-025]
High efficiency, broad bandwidth, and robust angular tolerance are key considerations in photonic device design. Here, a few-layer, asymmetric light transmitting metasurface that simultaneously satisfies all the above requirements is reported. The metasurface consists of coupled metallic sheets. It has a measured transmission efficiency of 80%, extinction ratio of 13.8 dB around 1.5 mu m, and a full width half maximum bandwidth of 1.7 mu m. It is as thin as 290 nm, has good performance tolerance against the angle of incidence and constituent nano-structure geometry variations. This work demonstrates a practical asymmetric light transmission device with optimal performance for large scale manufacturing.
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