Bloch oscillations in one-dimensional coupled multiple microcavities containing negative-index materials

被引：5

作者：

Wang, Tong-Biao ^{[1
]}

Liu, Nian-Hua ^{[2
]}

Deng, Xin-Hua ^{[1
]}

Liao, Qing-Hua ^{[1
]}

机构：

[1] Nanchang Univ, Dept Phys, Nanchang 330031, Peoples R China

[2] Nanchang Univ, Inst Adv Study, Nanchang 330031, Peoples R China

来源：

JOURNAL OF OPTICS | 2011年 / 13卷 / 09期

基金：

中国国家自然科学基金;

关键词：

metamaterials; Bloch oscillation; photonic crystals; MODES;

D O I：

10.1088/2040-8978/13/9/095705

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a one-dimensional (1D) coupled multiple microcavities (MMCs) structure containing negative-index materials. We obtain the photonic Wannier-Stark ladders (WSLs) both in the ordinary and the well-known omnidirectional band gaps by modulating the widths of the cavities. Due to the omnidirectional gaps having novel characteristics compared with the Bragg gaps, it is meaningful to study the WSL that lies in the omnidirectional gap. We study the temporal-spatial evolutions of Gaussian pulses whose central frequencies are in both gaps as passing through the proposed structure. We show for the first time that the electromagnetic Bloch oscillations can occur in such photonic structures containing negative-index materials.

引用

页数：6

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