Impact of spectral broadening on plasmonic enhancement with metallic gratings

被引：7
|
作者：
Feng, Xue [1 ]
Cui, Kaiyu [1 ]
Liu, Fang [1 ]
Huang, Yidong [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Integrated Optoelect, Beijing 100084, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 12期
基金：
中国国家自然科学基金;
关键词：
SPONTANEOUS EMISSION; PHOTOLUMINESCENCE; EMITTERS;
D O I：
10.1063/1.4753806
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The Purcell factor (PF) of the propagating surface plasmon polariton (SPP) mode on metallic grating is evaluated with full integration formula of Fermi's golden rule, while both spontaneous emission linewidth of single quantum dot and the spectrum broadening of photonic density of state (DOS) due to the propagation loss of SPP mode are involved. It is found that the PF would be degraded by taking account of the emission linewidth. For emitters with narrow linewidth, the DOS broadening is dominant while it would be helpful to some degree for wide-linewidth emitters. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4753806]
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