Fabrication of coupled GaAs quantum dots and their optical properties

Title
Fabrication of coupled GaAs quantum dots and their optical properties
Authors
김종수송진동Clare C. Byeon강한수정문석조남기박성준최원준이정일김진수임재영임상엽고도경이종민
Keywords
GaAs; Quantum dots
Issue Date
2009-04
Publisher
Physica status solidi. C, Conferences and critical reviews : PSS.
Citation
VOL 6, NO 4, 802-805
Abstract
The coupled GaAs quantum dot molecules (QDMs), which were laterally coupled along the [11 0] direction, were formed by droplet epitaxy. The optical properties of QDMs were investigated by femtosecond laser excited photoluminescence (PL) measurement. When the laser polarization is parallel to [110] direction on the QDMs, the main PL peak is red-shifted by 55 meV from the PL peak measured with the laser polarization parallel to [110] direction. By changing the excitation power, we found that the emission wavelength of the QDMs was strongly depending on the excitation laser polarization. From this result, we carefully suggested that the confined states in QDMs could be tuned by optical field.
URI
http://pubs.kist.re.kr/handle/201004/35444
ISSN
1610-1634
Appears in Collections:
KIST Publication > Article
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