Very large spontaneous-emission β factors in photonic-crystal waveguides

被引：119

作者：

Lecamp, G. ^{[1
]}

Lalanne, P. ^{[1
]}

Hugonin, J. P. ^{[1
]}

机构：

[1] Univ Paris 11, CNRS, Lab Charles Fabry Inst Opt, F-91127 Palaiseau, France

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.99.023902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Through a new rigorous Bloch-mode formalism, we theoretically study the generation of photons in single-row-defect photonic-crystal waveguides. In contrast with previous related works relying on a reinforcement of the spontaneous emission (SE) through microcavity effects, we explore situations for which the SE into radiation modes is reduced to a very low level while the SE into the guided mode is maintained at a level comparable to that in the bulk material. Remarkably large SE beta factors in excess of 95% are obtained, and since no resonance effect is involved, this efficiency is achieved over a 40-nm-large spectral interval at lambda approximate to 950 nm.

引用

页数：4

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