The design of a flashlamp triggering and driving circuit is described for the short pulse pumping of a Nd3+YAlO crystal suitable forQhyphen;switched operation. The special features of this system were a prepulse circuit for pulsing the flashlamp immediately before the main pulse, and a new method of flashlamp triggering based upon a saturable choke. An increase in laser efficiency and pulse reproducibility was obtained when the prepulse mode of operation was used.
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