Research On Catalysts For Long-Life Closed-Cycle CO2 Laser Operation

Barry D. Sidney; David R. Schryer; Billy T. Upchurch; Robert V. Hess; George M. Wood; Irvin M. Miller; Lewis G. Burney; Kenneth G. Brown; John D. Van Norman; Jacqueline Schryer

doi:10.1117/12.940592

24 September 1987 Research On Catalysts For Long-Life Closed-Cycle CO₂ Laser Operation

Barry D. Sidney, David R. Schryer, Billy T. Upchurch, Robert V. Hess, George M. Wood, Irvin M. Miller, Lewis G. Burney, Kenneth G. Brown, John D. Van Norman, Jacqueline Schryer

Author Affiliations +

Proceedings Volume 0783, Laser Radar II; (1987) https://doi.org/10.1117/12.940592
Event: 1987 Technical Symposium Southeast on Optics, Electro-Optics, and Sensors, 1987, Orlando, FL, United States

Abstract

Long-life, closed-cycle operation of pulsed CO₂ lasers requires catalytic CO-0₂ recombination both to remove 02, which is formed by discharge-induced CO2 decomposition, and to regenerate CO₂. Platinum metal on a tin-oxide substrate (Pt/Sn02) has been found to be an effective catalyst for such recombination in the desired temperature range of 25°C to 100°C. This paper presents a description of ongoing research at NASA-LaRC on Pt/Sn0₂ catalyzed CO-0₂ recombination. Included are studies with rare-isotope gases since rare-isotope CO₂ is desirable as a laser gas for enhanced atmospheric transmission. Results presented include 1) the effects of various catalyst pretreatment techniques on catalyst efficiency 2) development of a technique, verified in a 30-hour test, to prevent isotopic scrambling when C180 and 1802 are reacted in the presence of a common-isotope Pt/Sn'02 catalyst and 3) development of a mathematical model of a laser discharge prior to catalyst introduction.

Citation Download Citation

Barry D. Sidney, David R. Schryer, Billy T. Upchurch, Robert V. Hess, George M. Wood, Irvin M. Miller, Lewis G. Burney, Kenneth G. Brown, John D. Van Norman, and Jacqueline Schryer "Research On Catalysts For Long-Life Closed-Cycle CO₂ Laser Operation", Proc. SPIE 0783, Laser Radar II, (24 September 1987); https://doi.org/10.1117/12.940592

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