Abstract:
It is demonstrated experimentally that the pulse duration of a pulse-periodic CO2 laser utilizing an air–CO2 mixture with an average power of 500 W can be regulated over a wide range (0.1–80 μsec) by altering the mixture composition and the resonator Q factor. A semiempirical model is proposed for calculation of the output pulse parameters. This can be used to optimize the resonator and to analyze the energy losses for different mixture compositions by measuring the output radiation characteristics of a known resonator with known active medium dimensions. The results of the calculations show good agreement with the experiment.
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