Quantum dot polarized light sources
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Quantum dot polarized light sources
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Creator |
BHATTACHARYA, P
BASU, D DAS, A SAHA, D |
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Subject |
SURFACE-EMITTING LASERS
SPIN RELAXATION MODULATION INJECTION SEMICONDUCTOR DYNAMICS DEVICE GAIN |
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Description |
The design, operation and performance of quantum dot spin-polarized vertical cavity surface emitting lasers (VCSELs) and single-photon sources are described and discussed. The effects of spin-induced gain anisotropy on output polarization and threshold current reduction have been studied along with the high-frequency response in a spin-polarized VCSEL. While the output circular polarization in a VCSEL follows the out-of-plane magnetization characteristics of the ferromagnetic spin injector, the output polarization of the spin-polarized single-photon source shows a switching behavior which is explained by invoking the exciton fine structure in the quantum dots and the effects of electron-hole exchange splitting due to in-plane quantum dot rotational asymmetry.
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Publisher |
IOP PUBLISHING LTD
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Date |
2012-06-26T10:03:58Z
2012-06-26T10:03:58Z 2011 |
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Type |
Article
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Identifier |
SEMICONDUCTOR SCIENCE AND TECHNOLOGY,26(1)-
0268-1242 http://dx.doi.org/10.1088/0268-1242/26/1/014002 http://dspace.library.iitb.ac.in/jspui/handle/100/14358 |
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Language |
English
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