Optical anisotropy in arrow-shaped InAs quantum dots

被引：74

作者：

Henini, M

Sanguinetti, S

Fortina, SC

Grilli, E

Guzzi, M

Panzarini, G

Andreani, LC

Upward, MD

Moriarty, P

Beton, PH

Eaves, L

机构：

[1] Univ Milan, INFM, I-20126 Milan, Italy

[2] Univ Milan, Dipartimento Sci Mat, I-20126 Milan, Italy

[3] Univ Nottingham, Dept Phys, Nottingham NG7 2RD, England

[4] INFM, I-27100 Pavia, Italy

[5] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.57.R6815

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have observed a direct correlation between nonspherical shape and polarization anisotropy of optical transitions in quantum dots. The dots, grown by self-assembling during epitaxial deposition of InAs on GaAs(311)A, exhibit a nonconventional, faceted, arrowheadlike shape aligned in the [(2) over bar 33] direction. The dot photoluminescence emission is partially (approximate to 13%) polarized along the same [(2) over bar 33] direction. The presence and the sign of the emission polarization is in agreement with the predictions of a theoretical model. Full morphological and optical characterization is reported.

引用

页码：R6815 / R6818

页数：4

共 36 条

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