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The influence of CO and CO2laser performance

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1 Author(s)
Brinkschulte, Hermann W. ; Institute for Exploratory Research, U. S. Army Electronics COmmand, Fort Monmouth, NJ, USA

Impurities are necessary to achieve considerable CW laser action in CO2since in pure CO2the disintegration of the lower laser level is too slow to maintain a substantial population inversion. The dissociation product CO, provided by the discharge itself if initially pure CO2is used in a sealed system, enhances the gain mainly because of its effectiveness in accelerating the relaxation of the first level of the bending mode to which the lower laser level relaxes. The characteristic time for energy exchange between these two levels is20 pm 5 mus at 1 torr, 400°K. Experiments in He-CO2mixtures support the assumption that the main influence of CO is to accelerate the decomposition of the lower laser level.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:4 ,  Issue: 11 )