Dynamics of a Two-Level Medium Under the Action of Short Optical Pulses

Mocanu

2007

SPIE Proceedings

The objective of this paper is to analyze two marking laser systems and to discuss the possible industrial applications of laser techniques; the first uses a diode pumped Ytterbium fiber laser and the second a pumped flash light Nd:YAG. Starting from the phenomena of heating due to laser irradiation and the spatial profile of deposited energy we try to explain the marking technique, including the laser-assisted coloring by studying the dynamics and the evolution of the parameters involved in this process. Also we emphasize the industrial importance of the laser possibilities compared to classical methods.

Section: General Considerationmentioning

confidence: 99%

Thermal effects in the 2D and 3D laser material marking and coloring

Mocanu

2007

SPIE Proceedings

“…An intercontinental network of 250,000 km of submarine communication cables for long-distance applications, intercity and transoceanic with a capacity of 2.56 Tb/s was completed, by 2002 [2,20]. Modern lines of communications use the Erbium Doped Fiber Amplifier (EDFA) instead of the classical repeaters so that distances of more than 100 kilometers, are permitted between the amplification points [3][4][5][6][7]. These lines of communications use also the wavelength-division multiplexing of many signals so that the capacity of the fiber channel s increased.…”

Section: Introductionmentioning

confidence: 99%

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

2020

Technium

Self Cite

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.

“…The mathematical models, the methods, and the numerical simulations from nonlinear dynamics are important in processing of data concerning particle physics. Some numerical results concerning the dynamics of a two-level medium under the action of short optical pulses are presented in the papers [12][13][14][15][16][17][18]. We analyse in the paper the nonlinear dynamics of the lasers with quantum wells and optic fibers as well as the soliton collisions and the behavior of particles in high energy physics as solitons.…”

Section: Introductionmentioning

confidence: 99%

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

Advances in High Energy Physics

2013

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.