Journal
OPTICS EXPRESS
Volume 20, Issue 2, Pages 1856-1861Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.001856
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Funding
- NSFC [10874134, 61008043, 11004001]
- National Program on Key Science Research of China [2011CB922201]
- Ministry of Education of China [708063]
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We theoretically investigated optical third-order nonlinearity of a coherently coupled exciton-plasmon hybrid system under a strong control field with a weak probe field. The analytic formulas of exciton population and effective third-order optical susceptibility of the hybrid of a metal nanoparticle (MNP) and a semiconductor quantum dot (SQD) were deduced. The bistable exciton population and the induced bistable nonlinear absorption and refraction response were revealed. The bistability region can be tuned by adjusting the size of metal nanoparticle, interparticle distance and intensity of control field. Our results have perspective applications in optical information processing based on resonant coupling of exciton-plasmon. (C) 2012 Optical Society of America
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