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CO2 laser performance with a distributed gold catalyst

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3 Author(s)
Macken, J.A. ; Optical Eng. Inc., Santa Rosa, CA, USA ; Yagnik, S.K. ; Samis, M.A.

The performance of a CO2 laser was improved by coating the inside wall of the discharge tube with a discontinuous gold film. In the presence of the discharge, the gold acts as an ambient temperature catalyst to reform decomposed CO2. The gold coated laser delivered 122 W/m for both sealed-off and flowing operation. CO2 decomposition levels are presented as a function of input power, gas pressure, and temperature. Atomic oxygen, generated by the discharge, appears to be required for gold to exhibit any detectable catalytic activity

Published in:

Quantum Electronics, IEEE Journal of  (Volume:25 ,  Issue: 7 )