Enhanced spontaneous emission at 1.55 μm from colloidal PbSe quantum dots in a Si photonic crystal microcavity

被引：64
|
作者：
Wu, Z. [1 ]
Mi, Z.
Bhattacharya, P.
Zhu, T.
Xu, J.
机构：
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA
[2] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 17期
关键词：
D O I：
10.1063/1.2731657
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors report on the design, fabrication, and characterization of 1.55 mu m Si-based photonic crystal microcavity light emitters utilizing PbSe quantum dots. Efficient coupling of emission from PbSe quantum dots to Si photonic crystal membrane microcavity is achieved by inserting the quantum dots in a central air hole in the microcavity. Enhancement of spontaneous emission with linewidth of similar to 2.0 nm is observed at 1550 nm at room temperature. The Purcell factor and the spontaneous emission coupling factor are estimated to be 35 and 0.04, respectively. (c) 2007 American Institute of Physics.
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页数：3
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