Spatially resolved spectroscopy of single and coupled quantum dots

被引:5
|
作者
Abstreiter, G [1 ]
Bichler, M [1 ]
Markmann, M [1 ]
Schedelbeck, G [1 ]
Wegscheider, W [1 ]
Zrenner, A [1 ]
机构
[1] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany
关键词
quantum dots; spatially resolved spectroscopy;
D O I
10.1143/JJAP.38.449
中图分类号
O59 [应用物理学];
学科分类号
摘要
Optical properties of single and coupled quantum dots are studied with high spatial resolution. Several techniques are used to resolve spectra of individual dots. Spatially isolated dots produced by double cleaved edge overgrowth are investigated by diffraction limited spectroscopy using a special microscope setup. Self-assembled InGaAs dots have been investigated by nearfield optical techniques with metallic masks and by scanning tunneling microscopy cathodoluminescence. Photoluminescence and photoluminescence excitation spectra of selected quantum dots are discussed which reveal detailed information on ground and excited states as well as their coupling with neighboring dots.
引用
收藏
页码:449 / 454
页数:6
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