Abstract
The statistical fluctuations of the light intensities of a dye ring laser with two counterpropagating modes and a resonant injected signal are investigated experimentally as a function of the strength of the injected signal. The laser is operated a little above threshold in the region of spontaneous mode switching. The probability density of the mode intensities is obtained from the measurements, and from it the probability for one mode to be on or off and the intensity cross-correlation function are derived. The results are compared with predictions of the Langevin theory of the two-mode ring laser with injected signal. Reasonable agreement between theory and experiment is found even in the absence of pump fluctuations from the theory.
© 1991 Optical Society of America
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