Mathematical modeling of CO2 TEA laser

Analysis of the dynamics of a mechanical Q-switched CO2 laser: Six-temperature model

“…8 Considering all kinds of energy transfer among molecules and the processes of electron collision excitation for CO 2 , N 2 , and CO molecules, the following equations can be obtained to describe the variation in the stored energy density in unit volume ͑ergs/ cm 3 ͒ as a function of time variation, respectively. Equations ͑1͒-͑3͒ describe the time evolution of the energy stored in the three different CO 2 a͒ Author to whom correspondence should be addressed; electronic mail: jygao@mail.jlu.edu.cn vibrational modes ͑symmetrical, bending, and antisymmetri-cal͒, ͑4͒ the N 2 vibrational mode, and ͑5͒ for the CO molecules: [8][9][10][11]…”

“…The equations listed above equal zero. For simplicity, we give out the initial values of the equations as 10 T i ͑t = 0͒ = T͑t = 0͒ = 300 K, ͑19͒…”

“…In order to run the program, most of other numerical constants are measurable or available in the literature. [8][9][10][11] 6TM considers the dissociation of CO 2 molecules. Figure 4 shows the variations of the cavity-field intensity for different nondissociation coefficients.…”

Simulation and initial experiments of a high power pulsed TEA CO2laser

“…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.…”