TITLE

Observation of back-surface reflected luminescence in GaAs excited by ultrashort pulses

AUTHOR(S)
Wen, X. M.; Smith, T. A.; Ghiggino, K. P.; Dao, L. V.; Hannaford, P.
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Multiple peaks observed in the temporal evolution of the luminescence of GaAs excited by an ultrashort pulse are attributed to the effect of back-surface reflection. The luminescence components originating from the direct emission and the back-surface reflection are well distinguished using up-conversion luminescence. At an appropriately high excitation energy a sharp peak in the luminescence evolution is observed in a self-assembled InGaAs/GaAs quantum dot sample, which is attributed to stimulated emission excited by the back-surface reflection.
ACCESSION #
37043756

 

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