Journal
OPTICS COMMUNICATIONS
Volume 321, Issue -, Pages 104-109Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2014.01.058
Keywords
Optical bistability; Optical multistability; Terahertz signal radiation; Dephasing decay rates
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Funding
- Iran Nanotechnology Initiative Council
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In this paper, the effect of terahertz signal field on optical bistability and multistability in InGaN/GaN quantum dot nanostructure inside a unidirectional ring cavity is investigated. Quantum dot nanostructure is designed numerically by Schrodinger and Poisson equations which solve self consistently. By size control of quantum dot and external voltage, one can design a four level quantum dot with appropriate energy levels which can be suitable for controlling the optical bistability and multistability by terahertz signal field. It is found that the frequency detuning and intensity control of terahertz signal radiation as well as the dephasing decay rates can influence the optical bistability and multistability behaviors. (C) 2014 Elsevier B.V. All rights reserved.
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