Polarization conversion of excitonic photoluminescence under zero and nonzero magnetic fields in single InAlAs quantum dots


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/49097

Title:	Polarization conversion of excitonic photoluminescence under zero and nonzero magnetic fields in single InAlAs quantum dots
Authors:	Kaji, R. Browse this author
	Shindo, T. Browse this author
	Adachi, S. Browse this author →KAKEN DB
	Muto, S. Browse this author →KAKEN DB
Keywords:	quantum dot
	optical alignment
	optical orientation
	InAlAs
	fine structure
Issue Date:	Sep-2010
Publisher:	Elsevier B.V.
Journal Title:	Physica E: Low-dimensional Systems and Nanostructures
Volume:	42
Issue:	10
Start Page:	2501
End Page:	2504
Publisher DOI:	10.1016/j.physe.2010.01.051
Abstract:	We demonstrated the circular to linear polarization conversion in single InAlAs/AlGaAs QDs. Since the anisotropic exchange interaction acts on the photo-created exciton spin as an in-plane effective magnetic field, the polarization of emissions can be converted from circular to linear and vice versa even under a zero external magnetic field. By using the quasi-resonant excitation, high conversion ratio up to ～50% was obtained under nonzero longitudinal magnetic field. Additionally, exciton spin relaxation time and built-in linear dichroism were estimated by exciton spin dynamics in the 3D pseudospin precession model.
Type:	article (author version)
URI:	http://hdl.handle.net/2115/49097
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鍜治怜奈

OAI-PMH ( junii2 , jpcoar_1.0 )

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