Numerical simulation of a mode‐locked quantum dot external cavity laser

Dogru, Nuran; Adams, M.J.

doi:10.1049/iet-opt.2013.0040

Cited by 7 publications

(2 citation statements)

References 31 publications

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“…The parameters used in the simulations are given in Table 1. The values of these parameters were obtained from [13,[20][21][22]. Unlike previous studies, here the nonlinear gain was considered for multi-population rate equations.…”

Section: Discussionmentioning

confidence: 99%

Gain-Switched Short Pulse Generation from 1.55 µM InAs/InP/(113)B Quantum Dot Laser Modelled Using Multi-Population Rate Equations

Tunc¹,

Dogru²,

Cengiz³

2022

Preprint

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For the first time the gain switching properties of an InAs-InP (113)B quantum dot laser are examined theoretically in detail to generate shorter pulses with the application of a Gaussian pulse beam to the laser excited state. The multi population rate equations considering nonlinear gain are solved by the Runge –Kutta method. The numerical results demonstrated that as the homogeneous and the inhomogeneous broadening increase, the differential gain, the gain compression factor and the threshold current of excited state decrease, while threshold current of ground state increases. It was also observed that the contribution of the excited state to gain-switched output pulses depends on not only the value of the inhomogeneous broadening but also the magnitude of the applied current. Finally it was shown that without an optical beam, output pulse has long pulse width due to ground state emission, whereas with an optical beam, narrow pulses having high peak power owing to the excited state emission are generated even though at low currents.

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Section: Discussionmentioning

confidence: 99%

Gain-Switched Short Pulse Generation from 1.55 µM InAs/InP/(113)B Quantum Dot Laser Modelled Using Multi-Population Rate Equations

Tunc¹,

Dogru²,

Cengiz³

2022

Preprint

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“…Brilliant works based on numerical techniques have been published in accordance with different lasers and applications. Among these works, double quantum well lasers , temperature effect on laser sintering process ; coupled mode‐locked laser equations in time domain , and the surface‐emitting lasers , have successfully been simulated.…”

Section: Introductionmentioning

confidence: 99%

3D meshless simulation of laser ray deviation under thermal lensing effect

Afsari

Heidari

Movahhedi

2015

Int J Numerical Modelling

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Summary In this study, one of the most important destructive effects in end‐pumped Nd:YAG laser, that is, thermal lensing is analyzed. Different partial differential equations, supplemented by suitable boundary conditions, are solved and joined to illustrate the fluctuations in laser Transverse Electromagnetic (TEM) mode. Because of no analytic demonstration of this effect, an efficient meshless method known as radial point interpolation meshless method (RPIM) is used to simulate the problem divided into two two‐dimensional cases, that is, xz and yz planes so as to be graphically understandable. The results are in good agreement with measurement reports, and the RPIM shows better accuracy than FEM. Copyright © 2015 John Wiley & Sons, Ltd.

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