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Quantum dot polarized light sources

DSpace at IIT Bombay

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Field Value
 
Title Quantum dot polarized light sources
 
Creator BHATTACHARYA, P
BASU, D
DAS, A
SAHA, D
 
Subject SURFACE-EMITTING LASERS
SPIN RELAXATION
MODULATION
INJECTION
SEMICONDUCTOR
DYNAMICS
DEVICE
GAIN
 
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.
 
Publisher IOP PUBLISHING LTD
 
Date 2012-06-26T10:03:58Z
2012-06-26T10:03:58Z
2011
 
Type Article
 
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
 
Language English