&lt;title&gt;Modulated laser diode for medical applications&lt;/title&gt;

Sterian, Andreea Rodica; Ninulescu, Valerica; Sterian, Livia

doi:10.1117/12.582837

Cited by 3 publications

(8 citation statements)

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“…In Figure 8, the variation of the photon density S for different modulation indices as in [28] is compared. Such a route to chaos with the increase of m by doubling of the period can also be presented qualitatively in the phase space as in [10,28]. Knowing the hierarchy of instabilities of laser devices is useful in designing and calculating stable operating regimes in applications.…”

Section: Routes To Chaos and Bifurcation Diagramsmentioning

confidence: 99%

“…In the above expressions, V 2 n and V 2 s , there are variances of the random variables F n and F s , respectively, and r a correlation coefficient. See reference [28] for details. In the numerical modeling of Eqs.…”

Section: Recent Development In Optoelectronic Devicesmentioning

confidence: 99%

“…The nonlinear dynamics is treated taking into account the complexity of the phenomena which govern the field-substance interaction including the dissipative phenomena [1][2][3][4][5][6]. Computational software was elaborated to study the nonlinear phenomena in such kinds of quantum devices [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Second, we treat the complex nonlinear dynamics, characterized by bifurcation points and chaos, the critical values of the parameters being determined. The work emphasizes the variety of dynamical modes of operation of a semiconductor laser as a result of modulation of the injection current [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Dynamics in Optoelectronics Structures with Quantum Well

Sterian¹

2018

Recent Development in Optoelectronic Devices

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The author presents some results on nonlinear dynamics in optoelectronics nanostructures as lasers with quantum wells and quantum well solar cells using mathematical modeling and numerical simulations of the phenomena which take place in such kinds of structures. The nonlinear dynamics takes the complexity of the phenomena into account, which govern the field-substance interaction. Computational software was elaborated to study the nonlinear phenomena in such quantum devices, which put into evidence their complex nonlinear dynamics, characterized by bifurcation points and chaos, and the critical values of the parameters being determined. The mathematical modeling and numerical simulations for the quantum well solar cells for optimizing the values of their optical parameters (refraction index, reflectance, and absorption) were also analyzed, so that the conversion efficiency of the devices can be improved. Although in our study we have considered only rectangular quantum wells, the hybrid model allows computing the optimum values of the parameters whatsoever the form of the quantum wells. The developed numerical models and the obtained results are consistent with the existing data in the literature for the optoelectronics of quantum well structures, having important implications in the applications.

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Section: Routes To Chaos and Bifurcation Diagramsmentioning

confidence: 99%

Section: Recent Development In Optoelectronic Devicesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear Dynamics in Optoelectronics Structures with Quantum Well

Sterian¹

2018

Recent Development in Optoelectronic Devices

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“…The numerical simulations of the lasers with quantum wells (QWL) are based on solving the nonlinear differential equations which describe the behaviour of this kind of devices [20][21][22][23][24][25][26][27][28][29][30][31]. Study of functional characteristics of QWL is possibly based on the models present in [20], by implementing programs to integrate these equations in MathCad using appropriate algorithms.…”

Section: Modulation Capabilities and Bifurcation Diagramsmentioning

confidence: 99%

Numerical Simulations on Nonlinear Dynamics in Lasers as Related High Energy Physics Phenomena

Sterian

2013

Advances in High Energy Physics

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This paper aims to present some results on nonlinear dynamics in active nanostructures as lasers with quantum wells and erbium doped laser systems using mathematical models, methods, and numerical simulations for some related high energy physics phenomena. We discuss nonlinear dynamics of laser with quantum wells and of fiber optics laser and soliton interactions. The results presented have important implications in particle detection and postdetection processing of information as well as in soliton generation and amplification or in the case that these simulations are thought to be useful in the experiments concerning the high energy particles. The soliton behaviour as particle offers the possibility to use solitons for better understanding of real particles in this field. The developed numerical models concerning nonlinear dynamics in nanostructured lasers, erbium doped laser systems, the soliton interactions, and the obtained results are consistent with the existing data in the literature.

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Basic research for designing the erbium doped fiber amplifier in long distance cable communications

Sterian

2020

Technium

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The paper presents some of the author results obtained in the research on the optical fiber amplifiers and Quantum Well (QW) laser diodes used in long distance optical communications as those transoceanic and other applications. Based on the mathematical models of the Erbium Doped Fiber Amplifier (EDFA) and of the QW laser diodes, implemented in software (especially, MATHLAB and MATHCAD but also in SIMULINK and SPICE), we get the operational diagrams and parameters of the specified devices and structures. For example, the classic Runge-Kutta method hasbeen successfully used for numerical simulation of complex nonlinear dynamics in fiber optic lasers.The obtained results are important in the design and characterization of the optical fiber communication systems, as those of the optical cables used in the naval and civil engineering.

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<title>Modulated laser diode for medical applications</title>

Cited by 3 publications

References 0 publications

Nonlinear Dynamics in Optoelectronics Structures with Quantum Well

Nonlinear Dynamics in Optoelectronics Structures with Quantum Well

Numerical Simulations on Nonlinear Dynamics in Lasers as Related High Energy Physics Phenomena

Basic research for designing the erbium doped fiber amplifier in long distance cable communications

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