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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.
Published in:
Applied Physics Letters
(Volume:71
,
Issue:
5
)
Date of Publication: Aug 1997
- Page(s):
- 590 - 592
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.119802
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Aug 1997
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