中国物理B ›› 2010, Vol. 19 ›› Issue (1): 17303-017303.doi: 10.1088/1674-1056/19/1/017303
钮月萍1, 龚尚庆1, 汪丽春2, 邓立2, 崔妮2
Wang Li-Chun(汪丽春)a)b), Deng Li(邓立) a)b), Cui Ni(崔妮)a)b) Niu Yue-Ping(钮月萍)a), and Gong Shang-Qing(龚尚庆)a)†
摘要: We investigate the transmission properties of a normally incident TM plane wave through metal films with periodic parabolic-shaped grooves on single and double surfaces using the finite-difference-time-domain method. Nearly zero transmission efficiency is found at wavelengths corresponding to surface plasmon excitation on a flat surface in the case where the single surface is grooved. Meanwhile, resonant excitation of surface plasmon polariton (SPP) Bloch modes leads to a strong transmission peak at slightly larger wavelengths. When the grating is grooved on double surfaces, the transmission enhancement can be dramatically improved due to the resonant tunnelling between SPP Bloch modes.
中图分类号: (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))