An erbium-YAG laser has been Q-switched by two methods; a mechanical technique employing a rotating output coupler and electro-optically utilizing a LiNbO3 crystal. The performances of each technique are assessed and compared. Pulse durations of 150 to 850 ns have been produced, with pulse energies of 1 to 16 mJ depending on the technique used. A computer model based on the rate equations describes the temporal profile of the laser pulses, showing good agreement with experiment.
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Wannop et al. (1994) studied this question.
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