Experimental analysis of surface plasmon behavior in metallic circular slits | Zendy

ChinKai Chang | Zendy; DingZheng Lin | Zendy; C. S. Yeh | Zendy; ChihKung Lee | Zendy; You-Chia Chang | Zendy; MingWei Lin | Zendy; Ji-Tian Yeh | Zendy; Jung-Ming Liu | Zendy

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Experimental analysis of surface plasmon behavior in metallic circular slits

Author(s) -

ChinKai Chang,

DingZheng Lin,

C. S. Yeh,

ChihKung Lee,

You-Chia Chang,

MingWei Lin,

Ji-Tian Yeh,

Jung-Ming Liu

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2471966

Subject(s) - surface plasmon , grating , optics , plasmon , materials science , localized surface plasmon , substrate (aquarium) , surface plasmon polariton , metal , light beam , optoelectronics , physics , oceanography , geology , metallurgy

Using a focused ion beam, the authors fabricated metallic circular slits onto a glass substrate coated with silver film. The influence of the number of slits and the focusing light phenomena was investigated by capturing the light transmitted through the circular slits. They demonstrate experimentally that the circular grating formed by a set of periodical slits can excite both stronger surface plasmon (SP) and localized surface plasmon as the number of slits increases. They found that the SP tended to congregate at the center of the circular grating, and that the reemitted light could be used to achieve a focusing phenomenon.

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