Efficient long life sealed CO lasers at room temperature

P. G. Browne*, A. L S Smith

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The effects of the cathode materials platinum, molybdenum, copper and aluminium and the gas additives hydrogen and xenon are assessed for the construction of sealed off carbon monoxide lasers (5-6 mu m) operating at room temperature. The elimination of hydrogen impurity is shown to be essential for long life operation. The removal of hydrogen is effected by diffusion across a heated palladium tube. CO lasers have been operated at up to 10% efficiency. One sealed off laser with an initial gas fill of 1.3 Torr CO, 18.7 Torr He and 2 Torr Xe and a copper cathode has operated continuously for over 2500 h giving 14 W of laser power at 7% efficiency from an active length of 90 cm.

Original languageEnglish
Article number024
Pages (from-to)870-874
Number of pages5
JournalJournal of Physics E: Scientific Instruments
Volume8
Issue number10
DOIs
Publication statusPublished - 1975
Externally publishedYes

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