Ringlike emission profiles in scanning near-field photoluminescence images of single InGaAs quantum dots -: art. no. 233312

被引：2

作者：

Geller, M ^{[1
]}

Manke, I ^{[1
]}

Hodeck, K ^{[1
]}

Heitz, R ^{[1
]}

Dähne, M ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.64.233312

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In scanning near-field photoluminescence images of single InGaAs quantum dots taken with uncoated fiber tips, we observed sharp ringlike features varying in diameter with detection energy. This is in contrast to the typical single emission peaks observed using metal-coated fiber tips. These features can be explained by electrical charges induced by the uncoated fiber tip that lead to a Stark shift of the transition energy depending on the tip position. Simulations of the electric field at the quantum dot agree nicely with the experimental observation.

引用

页数：4

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