Back to Search
Start Over
Exciton spin relaxation in InAs/InGaAlAs/InP(001) quantum dashes emitting near 1.55 {\mu}m
- Source :
- Appl. Phys. Lett. 109, 193108 (2016)
- Publication Year :
- 2018
-
Abstract
- Exciton spin and related optical polarization in self-assembled InAs/In$_{0.53}$Ga$_{0.23}$Al$_{0.24}$As/InP(001) quantum dashes emitting at 1.55 {\mu}m are investigated by means of polarization- and time-resolved photoluminescence, as well as photoluminescence excitation spectroscopy, at cryogenic temperature. We investigate the influence of highly non-resonant and quasi-resonant optical spin pumping conditions on spin polarization and spin memory of the quantum dash ground state. We show that a spin pumping scheme, utilizing the longitudinal-optical-phonon-mediated coherent scattering process, can lead to the polarization degree above 50%. We discuss the role of intrinsic asymmetries in the quantum dash that influence values of the degree of polarization and its time evolution.<br />Comment: 4 pages, 3 figures
Details
- Database :
- arXiv
- Journal :
- Appl. Phys. Lett. 109, 193108 (2016)
- Publication Type :
- Report
- Accession number :
- edsarx.1807.09143
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1063/1.4966997