Impact of optical gain broadening on characteristics of response function in the presence and absence of tunnelling injection for quantum dot semiconductor lasers

Kia, Yasin Yekta; Rajaei, Esfandiar

doi:10.1007/s12043-017-1441-9

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…Generally, the conventional quantum well laser has a large line width enhancement factor that results in the large chaotic region with the change of external injection or feedback level [15]. In recent years, another kind of laser, i.e., semiconductor quantum dot (QD) laser [16][17][18][19][20], has been presented and demonstrated to develop the family of the semiconductor laser. Compared with the quantum well laser, the semiconductor QD laser has some attractive characteristics such as small line width enhancement factor, hightemperature stability, low threshold current density, high modulation bandwidth, and the reduced sensitivity to injection and feedback [21,22].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamics in Semiconductor Quantum Dot Laser Subject to Double Delayed Feedback: Numerical Analysis

Bao

2020

Braz J Phys

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In this study, the research on the nonlinear dynamics of semiconductor quantum dot laser with two time-delayed optical feedbacks is numerically investigated. Results show that the nonlinear dynamics behaviors of the laser are very sensitive to the rich system parameters in which both feedback strength and bias current are easily controlled to significantly influence the nonlinear dynamics including the periodic state and chaotic state. By judiciously adjusting the bias current of the laser or the feedback strength in the external cavity, period one, period doubling, quasi-period, and chaos are achieved. The feedback levelrelated bifurcation diagrams are analyzed in detail while fixing another feedback level at a constant or varying the bias current. In addition, the translation variables of the 0-1 test method that are clearly bounded for regular behavior and exhibit the Brownian motion for irregular phenomenon are adopted to further evaluate the periodic state and the chaotic state. These results can give insight into the quantum dot laser-based applications in various optical technologies.

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