Defocused imaging of quantum-dot angular distribution of radiation

被引：55
|
作者：
Patra, D
Gregor, I
Enderlein, J
Sauer, M
机构：
[1] Forschungszentrum Julich, Inst Biol Informat Proc 1, D-52425 Julich, Germany
[2] Forschungszentrum Julich, Inst Biol Informat Proc 2, D-52425 Julich, Germany
[3] Univ Bielefeld, Dept Phys Appl Laserphys & Laserspect, D-33615 Bielefeld, Germany
来源：
APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 10期
关键词：
D O I：
10.1063/1.2037194
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have applied defocused imaging of single fluorescent quantum dots to study the angular distribution of their emission. It is found that quantum dots exhibit an angular distribution best described by a superposition of emission of three perpendicular dipoles. A theory of the defocused images of such emitters is presented and compared with the measurements. Furthermore, it is shown that standard fluorescence anisotropy measurements are not able to uncover such complex emission behavior. (c) 2005 American Institute of Physics.
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页数：3
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