Laser emission from a He-air-CH4 mixture has been observed from 4.9668 to 5.5056μ. Most of the cw laser emissions have been identified to result from P(J) vibrational-rotational transitions in CO. Multiline power levels of over 1 W were achieved with the CH4 mixture. The lasing molecules are apparently formed by chemical-collisional processes within the discharge. Similar cw laser emissions from 4.9467 to 5.5717μ were observed from a He-air-C3H8 mixture.
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Barry et al. (1971) studied this question.
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