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

Kaji, R.; Shindo, T.; Adachi, S. et al.

Physica E: Low-dimensional Systems and Nanostructures, 2010, 42(10), 2501-2504

Permalink : https://hdl.handle.net/2115/49097

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アクセス権	open access
URI	https://hdl.handle.net/2115/49097
タイトル	Polarization conversion of excitonic photoluminescence under zero and nonzero magnetic fields in single InAlAs quantum dots
著者	Kaji, R. ; Shindo, T. ; Adachi, S. ; Muto, S.
著者名 Kaji, R.
著者名 Shindo, T.
e-Rad_Researcher 10221722 著者名 Adachi, S.
e-Rad_Researcher 00114900 著者名 Muto, S.
言語	英語
キーワード	quantum dot
	optical alignment
	optical orientation
	InAlAs
	fine structure
発行日	2010-09
出版者	Elsevier B.V.
収録物名	Physica E: Low-dimensional Systems and Nanostructures
巻(号)	42(10)
ページ	2501-2504
抄録	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.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	1386-9477
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.physe.2010.01.051