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The output from a low-beam-divergence KrF ultraviolet laser has been used to simultaneously trigger two multimegavolt gas-filled switches emersed in a water dielectric. Focusing 55 mJ of laser energy into the interelectrode gap of each switch has produced simultaneity jitter of ≤1.7 ns for closure of both 2.40-MV self-breakdown voltage (SBV) switches. Both switches have displayed essentially identical switching behavior, with individual switch jitter ≲2.3 ns. The triggering delay to switch closure after laser irradiation of the switch has exhibited linear dependence upon switch voltage in the 60%–90% SBV region.
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Adams et al. (1983) studied this question.
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