Description:
<jats:p>A continuous DF chemical laser is reported. Population inversion is obtained by diffusing D2 into a supersonic free jet containing F atoms. Output power of the DF laser is compared with a similar HF laser previously reported. The ratio of DF to HF laser output power is 0.7 for fixed supersonic jet conditions and the same molar flow of H2 and D2. The efficiency of conversion of chemical energy to laser energy is approximately 12 and 8 % for the HF and DF lasers, at power levels of 475 and 340 W, respectively.</jats:p>