Phys. Rev. B 70, 235318 (2004) [5 pages]Indications of amplified spontaneous emission in the energy transfer between InAs self-assembled quantum dotsReceived 16 July 2004; published 15 December 2004 We have studied the energy-transfer process in InAs self-assembled quantum dots (QD’s) for low and high QD density, analyzing the spectral, spot size and excitation intensity dependence of the spatially resolved low-temperature cw microluminescence. We have observed energy transfer from small QD’s to larger QD’s even outside the excitation region over the sample. An amplified spontaneous emission driven energy-transfer mechanism is used to explain our results. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.70.235318
DOI:
10.1103/PhysRevB.70.235318
PACS:
78.67.Hc, 78.45.+h, 78.55.−m
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.