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Open AccessArticle

Nonlinear Dynamics of Exclusive Excited-State Emission Quantum Dot Lasers Under Optical Injection

1
School of Physical Science and Technology, Southwest University, Chongqing 400715, China
2
School of Mathematics and Physics, Jingchu University of Technology, Jingmen 448000, China
3
School of Physics, Chongqing University of Science and Technology, Chongqing 401331, China
4
College of Mobile Telecommunications, Chongqing University of Posts and Telecom, Chongqing 401520, China
*
Authors to whom correspondence should be addressed.
Photonics 2019, 6(2), 58; https://doi.org/10.3390/photonics6020058
Received: 28 April 2019 / Revised: 19 May 2019 / Accepted: 23 May 2019 / Published: 27 May 2019
(This article belongs to the Special Issue Semiconductor Laser Dynamics: Fundamentals and Applications)
We numerically investigate the nonlinear dynamic properties of an exclusive excited-state (ES) emission quantum dot (QD) laser under optical injection. The results show that, under suitable injection parameters, the ES-QD laser can exhibit rich nonlinear dynamical behaviors, such as injection locking (IL), period one (P1), period two (P2), multi-period (MP), and chaotic pulsation (CP). Through mapping these dynamic states in the parameter space of the frequency detuning and the injection coefficient, it can be found that the IL occupies a wide region and the dynamic evolution routes appear in multiple forms. Via permutation entropy (PE) calculation to quantify the complexity of the CP state, the parameter range for acquiring the chaos with high complexity can be determined. Moreover, the influence of the linewidth enhancement factor (LEF) on the dynamical state of the ES-QD laser is analyzed. With the increase of the LEF value, the chaotic area shrinks (expands) in the negative (positive) frequency detuning region, and the IL region gradually shifts towards the negative frequency detuning. View Full-Text
Keywords: quantum dot lasers; excited-state; nonlinear dynamics; optical injection quantum dot lasers; excited-state; nonlinear dynamics; optical injection
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MDPI and ACS Style

Jiang, Z.-F.; Wu, Z.-M.; Jayaprasath, E.; Yang, W.-Y.; Hu, C.-X.; Xia, G.-Q. Nonlinear Dynamics of Exclusive Excited-State Emission Quantum Dot Lasers Under Optical Injection. Photonics 2019, 6, 58.

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