Journal of Applied Physics
Gallium arsenide lasers, Lasers -- Oscillation -- Analysis
Lasers with mixed line broadening typically oscillate in a single longitudinal mode for excitation levels only slightly above threshold. At high pump levels, less desirable multimode oscillation may sometimes occur. A procedure is described for using the multimode threshold as a sensitive measure of the broadening ratio, and GaAs is mentioned as an example.
Casperson, L. W. (1981). Laser broadening ratio from the multimode oscillation threshold. Journal of Applied Physics, 52 (11), 6981-6983.