Controlling polarization of quantum-dot surface-emitting lasers by using structurally anisotropic self-assembled quantum dots
作者:
Hideaki Saito,
Kenichi Nishi,
Shigeo Sugou,
Yoshimasa Sugimoto,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 71,
issue 5
页码: 590-592
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.119802
出版商: AIP
数据来源: AIP
摘要:
Polarization control is achieved in vertical-cavity surface-emitting lasers (VCSELs) by using structurally anisotropic self-assembled quantum dots (QDs) as active layers. The dot shape is long in the [01¯1] direction on the (100) surface. The photoluminescence from the dots has a polarization dependence whose intensity along the [01¯1] direction is 1.37 times stronger than that along the orthogonal [011] direction. The QD VCSEL operates at the wavelength of the QD ground state transition. Lasing emission shows polarization along the [01¯1] direction and an orthogonal polarization suppression ratio of 18 dB. ©1997 American Institute of Physics.
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