单个量子点对远场激光束的强烈消光。

Strong extinction of a far-field laser beam by a single quantum dot.

作者信息

Vamivakas A N, Atatüre M, Dreiser J, Yilmaz S T, Badolato A, Swan A K, Goldberg B B, Imamoglu A, Unlü M S

机构信息

Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, USA.

出版信息

Nano Lett. 2007 Sep;7(9):2892-6. doi: 10.1021/nl0717255. Epub 2007 Aug 11.

DOI:10.1021/nl0717255

PMID:17691853

Abstract

Through the utilization of index-matched GaAs immersion lens techniques, we demonstrate a record extinction (12%) of a far-field focused laser beam by a single InAs/GaAs quantum dot. This contrast level enables us to report for the first time resonant laser transmission spectroscopy on a single InAs/GaAs quantum dot without the need for phase-sensitive lock-in detection.

摘要

通过利用折射率匹配的砷化镓浸没透镜技术，我们展示了单个砷化铟/砷化镓量子点对远场聚焦激光束创纪录的消光（12%）。这种对比度水平使我们首次能够在单个砷化铟/砷化镓量子点上进行共振激光透射光谱分析，而无需相敏锁相检测。