Light scattered from one counterpropagating mode into the other can drastically modify the behavior of a ring laser. We point out that, within the domain of the third-order laser theory, the effect of backscattering on the fluctuation properties of the light can be reduced simply by increasing the cavity-loss rate, so long as the increased loss can be compensated for by increased pumping of the gain medium.
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Christian et al. (1987) studied this question.