The dynamic model for laser arrays with diffraction coupling has been used to develop a technique for studying a transient process when changing over from spontaneous radiation of individual channels to collective generation. The nature and time of the transient process depend on the relationship between the selectivity factor of the system and the extent by which the gain increment exceeds the generation threshold. It is shown that the traditional dynamic model of collective generation provides the results that contradict the experimental evidence.
Department of General Physics and Wave Processes, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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