Cw laser oscillation on transitions of Cu+ in He-Cu halide gas discharges

J. A. Piper*, D. F. Neely

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We report cw oscillation on five transitions of Cu+ in the near infrared in hollow-cathode He-CuI, He-CuBr, and He-CuCl gas discharges. Excitation of the upper laser levels is attributed to thermal-energy charge-transfer reactions between ground-state He ions and neutral Cu atoms following discharge dissociation of the Cu halide molecules to generate free copper in the volume. Operating temperatures are in the range 400-550°C and threshold currents for oscillation compare favorably with the lowest yet reported for sputtering Cu+ lasers.

Original languageEnglish
Pages (from-to)621-623
Number of pages3
JournalApplied Physics Letters
Issue number7
Publication statusPublished - 1978

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