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A tunable optical response of a hybrid semiconductor quantum dot-metal nanoparticle complex in the presence of optical excitations |
JOSA B, Vol. 29, Issue 5, pp. 997-1002 (2012)
http://dx.doi.org/10.1364/JOSAB.29.000997
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Abstract
We theoretically investigate the optical response of a hybrid nanocrystal complex composed of a semiconductor quantum dot (SQD) and a metal nanoparticle (MNP) in the presence of laser fields within a full quantum description. The analytic results demonstrate that the modified decay rate of the exciton is related to the exciton energy and the distance between SQD and MNP in terms of a quantum transformation method. The responses of the coupled system to a weak laser field and a strong laser field are demonstrated. When the two laser fields are presented simultaneously, the energy absorption rate of the coupled system to the weak laser field can be controlled by the strong laser field and the distance between SQD and MNP. This tunable optical response in such a hybrid system can be exploited for the development of the optical processing devices such as ultrafast optical switch in the future.
© 2012 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(270.0270) Quantum optics : Quantum optics
ToC Category:
Optics at Surfaces
History
Original Manuscript: November 28, 2011
Revised Manuscript: February 3, 2012
Manuscript Accepted: February 9, 2012
Published: April 18, 2012
Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics
Citation
Yong He, Jin-Jin Li, and Ka-Di Zhu, "A tunable optical response of a hybrid semiconductor quantum dot-metal nanoparticle complex in the presence of optical excitations," J. Opt. Soc. Am. B 29, 997-1002 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-5-997
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