Abstract
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 language | English |
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Pages (from-to) | 621-623 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 33 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1978 |