An investigation was made of the kinetics of the spectrum of the output radiation of an injection laser obtained by employing a microwave modulating signal (2 GHz) in the pumping current circuit. It was found that strong modulation of the output intensity of the laser operating at a slight excess over the threshold produced multimode emission with the same random distribution of the modes as in the case of spontaneous pulsations.
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Eliseev et al. (1974) studied this question.
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