Abstract
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.