NEAR-FIELD SPECTROSCOPY OF THE QUANTUM CONSTITUENTS OF A LUMINESCENT SYSTEM

被引：488

作者：

HESS, HF

BETZIG, E

HARRIS, TD

PFEIFFER, LN

WEST, KW

机构：

[1] AT and T Bell Laboratories, Murray Hill, NJ 07974

来源：

SCIENCE | 1994年 / 264卷 / 5166期

关键词：

D O I：

10.1126/science.264.5166.1740

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Luminescent centers with sharp (<0.07 miliielectron volt), spectrally distinct emission lines were imaged in a GaAs/AIGaAs quantum well by means of low-temperature near-field scanning optical microscopy. Temperature, magnetic field, and linewidth measurements establish that these centers arise from excitons laterally localized at interface fluctuations. For sufficiently narrow wells, virtually all emission originates from such centers. Near-field microscopy/spectroscopy provides a means to access energies and homogeneous line widths for the individual eigenstates of these centers, and thus opens a rich area of physics involving quantum resolved systems.

引用

收藏

页码：1740 / 1745

页数：6

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