Optical anisotropy in self-assembled InP quantum dots | Zendy

Mitsuru Sugisaki | Zendy; Hongwen Ren | Zendy; Selvakumar V. Nair | Zendy; Kenichi Nishi | Zendy; S. Sugou | Zendy; Tsuyoshi Okuno | Zendy; Yasuaki Masumoto | Zendy

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Optical anisotropy in self-assembled InP quantum dots

Author(s) -

Mitsuru Sugisaki,

Hongwen Ren,

Selvakumar V. Nair,

Kenichi Nishi,

S. Sugou,

Tsuyoshi Okuno,

Yasuaki Masumoto

Publication year - 1999

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.59.r5300

Subject(s) - quantum dot , anisotropy , photoluminescence , physics , luminescence , condensed matter physics , exciton , excitation , fine structure , linear polarization , polarization (electrochemistry) , atomic physics , quantum mechanics , optics , laser , chemistry

Strong optical anisotropy is observed in the photoluminescence (PL) bands of both the InP self-assembled quantum dots and the Ga0.5In0.5P matrix. From the linearly polarized PL spectra measured under weak excitation, we found that large size quantum dots show strong anisotropy. The luminescence from a single quantum dot observed by the micro-PL technique revealed a doublet fine structure of the exciton levels that obey the linear polarization selection rule. The observed fine structure is shown to arise from an interplay of the electron-hole exchange interaction and the asymmetric crystal structure of the InP/Ga0.5In0.5P system

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