Kvantovaya Elektronika, 1975 Volume 2, Number 7,Pages 1415–1418(Mi qe11422)
Selection of optimal pump power for a CO2 laser with a non-self-sustained discharge
L. V. Dubovoi, V. A. Zaitsev, V. P. Poponin, V. F. Shanskii
Abstract:
A numerical analysis is made of a kinetic model of the processes occurring in a pulse CO2 laser excited by a non-self-sustained discharge. It is shown that the results of calculations are in satisfactory agreement with the experimental data in the range of pump powers covering long- and short-pulse regimes. The proposed model is used in the optimization of the parameters of this laser at atmospheric pressure in the specific pump power range 1–103 kW/cm3. It is found that the optimal specific power, which produces the highest specific output energy in a pulse Qout corresponds to high He concentrations in the gas mixture. The maximum value of Qout(0.12 J cm–3 atm–3 for an efficiency up to 25%) is achieved at pump powers corresponding to discharge electron densities in the range (1–5)X1013 cm–3 and for pump pulse durations 5–10 μsec.