Kinetic modeling and optimum design of the discharge tube for the CO&lt;sub&gt;2&lt;/sub&gt; laser with computational fluid dynamics method

Huang, Hongyan; Wang, Youqing

doi:10.1117/1.3509163

Cited by 11 publications

(1 citation statement)

References 19 publications

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“…High energy transversely excited atmospheric pressure (TEA) CO 2 lasers play an important role in many scientific, industrial and military applications [1,2]. Many programs have so far been written for simulation of the dynamic emission in such lasers in order to understand their physics and prediction of the output characteristics [3][4][5][6][7][8][9][10][11]. Different theoretical models such as four-, five-, and six-temperature models (6TM) are used to describe the kinetic processes of these types of lasers.…”

Section: Introductionmentioning

confidence: 99%

Simulation and initial experiments of a high power pulsed TEA CO₂laser

et al. 2015

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In this paper, the output characteristics of a UV pin array pre-ionized TEA CO 2 laser have been simulated and compared with the associated experimental data. In our simulation, a new theoretical model has been improved for transient behavior analysis of the discharge current pulse. The laser discharge tube was modeled by a nonlinear RLC electric circuit as a real model for electron density calculation. This model was coupled with a six-temperature model (6TM) in order to simulation dynamic emission processes of the TEA CO 2 laser. The equations were solved numerically by the fourth order Runge-Kutta numerical method and some important variables such as current and voltage of the main discharge, resistance of the plasma column and electron density in the main discharge region, were calculated as functions of time. The effects of non-dissociation factor, rotational quantum number and output coupler reflectivity were also studied theoretically. The experimental and simulation results are in good agreement.

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Section: Introductionmentioning

confidence: 99%

Simulation and initial experiments of a high power pulsed TEA CO₂laser

et al. 2015

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Kinetic modeling of a slow flow CW CO2 laser

2011

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A kinetic model for analysis of the slow-flow CW-discharge CO 2 laser with diffusion cooling has been developed in which the gas temperature is obtained from energy balance equations. The method is based on the numerical solution of a set of nonlinear differential equations for vibrational kinetics. The numerical predictions from the model are compared with some experimental results and a good agreement is obtained.

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