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The Lamb dip in the power spectrum of a cw HF chemical laser has been observed. The width and depth of this dip were measured as a function of the partial diluent pressure (He or N2) of the lasing mixture. From these measurements the Lorentzian linewidth parameters γHF–He and γHF–N2 for the pressure-broadened laser transitions were found to be about 4 and 18 MHz/torr, respectively.
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James A. Glaze (1973) studied this question.
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