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efficient unidirectional launching of surface plasmons by multi-groove structures
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نویسنده
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bao yimu ,liang hao ,liao huimin ,li zhi ,sun chengwei ,chen jianjun ,gong qihuang
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منبع
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plasmonics - 2017 - دوره : 12 - شماره : 5 - صفحه:1425 -1430
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چکیده
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Efficiency is an important criterion in developing a practical surface-plasmon-polariton (spp) unidirectional launcher. in this paper, we show that multi-groove structures can efficiently launch spps by numerically optimizing structural parameters and normal incident light. experimentally, a high efficiency of 58.4 % is demonstrated in a six-groove structure with a lateral dimension of 3.9 μm. for a three-groove structure with even smaller lateral dimension of 1.35 μm, the efficiency presents a broadband response, which remains higher than 42 % from 720 to 860 nm. the proposed multi-groove structures with high spp launching efficiency and small size exhibit potential in highly integrated plasmonic circuits.
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کلیدواژه
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surface plasmons ,unidirectional launcher and decoupler ,launching efficiency ,integrated optics devices
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آدرس
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peking university, school of physics, china, peking university, school of physics, china, peking university, school of physics, china, peking university, school of physics, china, peking university, school of physics, state key laboratory for mesoscopic physics, china, peking university, school of physics, state key laboratory for mesoscopic physics, china, peking university, school of physics, state key laboratory for mesoscopic physics, china
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Authors
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