Information obtained by investigating the aging process in passive CO<sub>2</sub> laser cells can be correlated with gaseous reactions that take place in active CO<sub>2</sub> laser tubes. The construction and operation of sealed off, passive cells facilitate the observation of gas mixtures under differing excitation conditions and electrode designs with a minimum expenditure of time and expense. The emission spectra in the visible region, recorded at intervals during operation, are used as indicators of the sequence of compositional changes in the original gas mixture. Additional information is gained by noting voltage changes. Data thus obtained from passive cells can be used for the possible extension of the lifetime of active lasers. Others have investigated long life, sealed off CO<sub>2</sub> lasers. A limited amount of information is available on passive systems.
J. W. Mellichamp and C. J. Bickart, "Visible Spectroscopy of the Aging Process in Passive N2–CO2–He–Xe Laser Cells," Appl. Spectrosc. 25, 97-99 (1971)
References are not available for this paper.
OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.