Optical properties of multilayer metal-dielectric nanofilms with all-evanescent modes

被引:104
作者
Feng, SM [1 ]
Elson, JM [1 ]
Overfelt, PL [1 ]
机构
[1] USN, Air Warfare Ctr, Res Dept Phys & Computat Sci, China Lake, CA 93555 USA
关键词
D O I
10.1364/OPEX.13.004113
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a systematic study of mode characteristics of multilayer metal- dielectric ( M- D) nanofilm structures. This structure can be described as a coupled- plasmon- resonant waveguide ( CPRW), a special case of coupled- resonator optical waveguide ( CROW). Similar to a photonic crystal, the M- D is periodic, but there is a major difference in that the fields are evanescent everywhere in the M- D structure as in a nanoplasmonic structure. The transmission coefficient exhibits periodic oscillation with increasing number of periods. As a result of surface- plasmon- enhanced resonant tunneling, a 100% transmission occurs periodically at certain thicknesses of the M- D structure, depending on the wavelength, lattice constants, and excitation conditions. This structure indicates that a transparent material can be composed from non- transparent materials by alternatively stacking different materials of thin layers. The general properties of the CPRW and resonant tunneling phenomena are discussed.
引用
收藏
页码:4113 / 4124
页数:12
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