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

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.

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Numerical investigation on photonic microwave generation by a sole excited-state emitting quantum dot laser with optical injection and optical feedback

Chinese Physics B ◽

10.1088/1674-1056/abd2a8 ◽

2020 ◽

Author(s):

Zai-Fu Jiang ◽

Zheng-Mao Wu ◽

Wen-Yan Yang ◽

Chun-Xia Hu ◽

Yan-Hong Jin ◽

...

Keyword(s):

Excited State ◽

Quantum Dot ◽

Numerical Investigation ◽

Optical Feedback ◽

Optical Injection ◽

Microwave Generation ◽

Quantum Dot Laser

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Nonlinear Dynamics of Two-State Quantum Dot Lasers under Optical Feedback

Photonics ◽

10.3390/photonics8080300 ◽

2021 ◽

Vol 8 (8) ◽

pp. 300

Author(s):

Xiang-Hui Wang ◽

Zheng-Mao Wu ◽

Zai-Fu Jiang ◽

Guang-Qiong Xia

Keyword(s):

Nonlinear Dynamics ◽

Quantum Dot ◽

Optical Feedback ◽

Equation Model ◽

Quantum Dot Lasers ◽

Nonlinear Dynamical ◽

Phase Offset ◽

Feedback Strength ◽

Linewidth Enhancement ◽

Dynamic States

A modified rate equation model was presented to theoretically investigate the nonlinear dynamics of solitary two-state quantum dot lasers (TSQDLs) under optical feedback. The simulated results showed that, for a TSQDL biased at a relatively high current, the ground-state (GS) and excited-state (ES) lasing of the TSQDL can be stimulated simultaneously. After introducing optical feedback, both GS lasing and ES lasing can exhibit rich nonlinear dynamic states including steady state (S), period one (P1), period two (P2), multi-period (MP), and chaotic (C) state under different feedback strength and phase offset, respectively, and the dynamic states for the two lasing types are always identical. Furthermore, the influences of the linewidth enhancement factor (LEF) on the nonlinear dynamical state distribution of TSQDLs in the parameter space of feedback strength and phase offset were also analyzed. For a TSQDL with a larger LEF, much more dynamical states can be observed, and the parameter regions for two lasing types operating at chaotic state are widened after introducing optical feedback.

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Effect of an excited-state optical transition on the linewidth enhancement factor of quantum dot lasers

Semiconductors ◽

10.1134/s1063782612020273 ◽

2012 ◽

Vol 46 (2) ◽

pp. 225-230 ◽

Cited By ~ 4

Author(s):

A. E. Zhukov ◽

A. V. Savelyev ◽

M. V. Maximov ◽

Yu. M. Shernyakov ◽

E. M. Arakcheeva ◽

...

Keyword(s):

Excited State ◽

Quantum Dot ◽

Enhancement Factor ◽

Optical Transition ◽

Quantum Dot Lasers ◽

Linewidth Enhancement Factor ◽

Linewidth Enhancement

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Comparison of dynamic properties of ground- and excited-state emission in p-doped InAs/GaAs quantum-dot lasers

Applied Physics Letters ◽

10.1063/1.4875238 ◽

2014 ◽

Vol 104 (18) ◽

pp. 181101 ◽

Cited By ~ 36

Author(s):

D. Arsenijević ◽

A. Schliwa ◽

H. Schmeckebier ◽

M. Stubenrauch ◽

M. Spiegelberg ◽

...

Keyword(s):

Excited State ◽

Quantum Dot ◽

Dynamic Properties ◽

Quantum Dot Lasers ◽

Gaas Quantum Dot

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Power-induced lasing state switching and bistability in a two-state quantum dot laser subject to optical injection

Optica Applicata ◽

10.37190/oa200209 ◽

2020 ◽

Vol 50 (2) ◽

Author(s):

Zaifu Jiang ◽

Zhengmao Wu ◽

Elumalai Jayaprasath ◽

Wenyan Yang ◽

Chunxia Hu ◽

...

Keyword(s):

Excited State ◽

Quantum Dot ◽

Ground State ◽

The State ◽

Optical Injection ◽

State Switching ◽

Quantum Dot Laser ◽

Injection Power ◽

Electron Escape ◽

Free Running

We theoretically investigate power-induced lasing state switching and bistability in a two-state quantum dot laser subject to optical injection. The simulated results show that, for a free-running two-state quantum dot laser operating at the ground state under low current, a power-induced lasing state switching between the ground state and the excited state can be achieved through introducing optical injection with a frequency (winj) close to the lasing frequency of excited state (wES). The injection power required for the state switching depends on the scanning route of injection power, i.e. there may exist state bistability for the injection power within a certain region. For forward scanning injection power, with the increase of frequency detuning (ΔΩ = winj – wES), the injection power required for the state switching shows a decreasing trend accompanied by slight fluctuations. However, for backward scanning injection power, the injection power required for the state switching exhibits obvious fluctuations with the increase of ΔΩ. The width of the hysteresis loop fluctuates with ΔΩ, and the fluctuation amplitude is increased with the increase of the injection current. Additionally, the influences of the inhomogeneous broadening factor and the electron escape rate on the bistability performances are analyzed.

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