Life problems of dc and rf-excited low-power cw CO/sub 2/ waveguide lasers
Journal Article
·
· Rev. Sci. Instrum.; (United States)
A number of different, rf-excited 3-W cw CO/sub 2/ waveguide lasers have been built. Four of these lasers, after continuously working for 15 000--30 000 h, still yield about 70% of their original power output. The design variations cover N/sub 2/- and CO-bearing gas mixtures, as well as internal- and external-capacitively coupled excitaton electrodes. A similar laser survived 50 000 5-min-ON/5-min-OFF cycles without significant mirror damage. We have not been able to find suitable cold cathodes that allow the building of longitudinally dc-excited cw CO/sub 2/ waveguide lasers that work for such extended periods of time.
- Research Organization:
- Electrical Engineering Department, University of Maryland, College Park, Maryland 20742
- OSTI ID:
- 5501084
- Journal Information:
- Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 57:9; ISSN RSINA
- Country of Publication:
- United States
- Language:
- English
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