期刊
PLASMONICS
卷 7, 期 2, 页码 221-227出版社
SPRINGER
DOI: 10.1007/s11468-011-9297-1
关键词
Surface plasmon polariton; Localized surface plasmon; Extraordinary optical transmission; Colloidal lithography
资金
- NNSFC [10774195, U0834001, 10974263, 10725420, U0934002]
- Ministry of Education [309024]
- Program for New Century Excellent Talents in University
- National Basic Research Program of China [2010CB923200]
We developed a method to fabricate a periodic array of three-dimensional crescent-like holes (3DCLH) via an inverted hemispherical colloidal lithography. It is found that there exists an extraordinary optical transmission in this non-planar perforated periodic array of 3DCLH when the electric field of the incident light is perpendicular to the cross-line of the crescent-like hole. This extraordinary optical peak is insensitive with the incident angles and sensitive with the angle between the electric field of the incident light to the cross-line of the 3DCLH. Numerical simulation based on finite-difference time-domain method reveals that this peak is caused by an asymmetric localized surface plasmon resonance. This structure might be useful for the optical sensing and optical-integrated circuits.
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