Competition of longitudinal and transverse modes in stable and unstable resonators of a cw HF chemical laser was investigated. Experimental results indicate strong competition and asymmetry among the modes. Single longitudinal mode operation was also achieved.
C. P. Wang,
R. L. Varwig,
"Mode Competition In A Continuous-Wave (CW) HF Chemical Laser", Proc. SPIE 0179, Adaptive Optical Components II, (11 July 1979); doi: 10.1117/12.957303; https://doi.org/10.1117/12.957303