期刊
SCIENCE ADVANCES
卷 5, 期 10, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aav3764
关键词
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资金
- U.S. Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI) [N00014-10-1-0942]
- U.S. Air Force Office of Scientific Research (AFOSR) MURI [FA9550-14-1-0389]
- Vannevar Bush Faculty Fellowship program - Basic Research Office of the Assistant Secretary of Defense for Research and Engineering
- Office of Naval Research [N00014-16-1-2029]
- National Natural Science Foundation of China (NSFC) [61771280]
- Juan de la Cierva Incorporation Fellowship - MCIU/AEI/FEDER/UE [RTI2018-093714-J-I00]
The field of plasmonics has substantially affected the study of light-matter interactions at the subwavelength scale. However, dissipation losses still remain an inevitable obstacle in the development of plasmonic-based wave propagation. Although different materials with moderate losses are being extensively studied, absorption arguably continues to be the key challenge in the field. Here, we theoretically and numerically investigate a different route toward the reduction of loss in propagating plasmon waves. Rather than focusing on a material-based approach, we take advantage of structural dispersion in waveguides to manipulate effective material parameters, thus leading to smaller losses. The potential of this approach is illustrated with two examples: plane-wave propagation within a bulk epsilon-near-zero medium and surface plasmon polariton propagation at the interface of a medium with negative permittivity. We provide the recipe for a practical implementation at mid-infrared frequencies. Our results might represent an important step toward the development of low-loss plasmonic technologies.
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