A stable CW white laser light consisting of red (6360 Å, 6355 Å), green (5378 Å, 5338 Å), and blue (4416 Å) line spectra emitted from Cd ions has been obtained with an improved flute-type hollow-cathode He-Cd+laser tube and a broad-band optical cavity. The typical output-power level was about 10 mW, discharge conditions being 250 V and 0.6 A.
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Fujii et al. (1975) studied this question.
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