Ultrasmall Volume Plasmons, yet with Complete Retardation Effects

被引：45

作者：

Feigenbaum, Eyal ^{[1
]}

Orenstein, Meir ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Elect Engn, IL-32000 Haifa, Israel

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.101.163902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nanoparticle plasmons are attributed to quasistatic oscillations with no wave propagation due to their subwavelength size. However, when located within a band-gap medium (even in air if the particle is small enough), the particle interfaces act as wave mirrors, incurring small negative retardation. The latter, when compensated by a respective (short) propagation within the particle, generates a constructive interference based resonator. The unusual wave interference in the subwavelength regime (modal volume < 0.001 lambda(3)) significantly enhances the Q factor, e.g., 50 vs 5.5 of the quasistatic limit.

引用

页数：4

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