Impact of spin blocking on the energy relaxation of electrons in quantum-dot lasers

Cao, C.; Deppe, D. G.
April 2004
Applied Physics Letters;4/12/2004, Vol. 84 Issue 15, p2736
Academic Journal
The impact of the electron spin relaxation time on the electron distribution in quantum-dot lasers is analyzed. The results show that a relatively long spin relaxation time (∼300 ps) can create a nonequilibrium carrier distribution in quantum-dot lasers. It is shown that a mechanism we call “spin blocking” increases emission from the quantum-dot excited states and can lead to excited state lasing in quantum-dot lasers. © 2004 American Institute of Physics.


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