A technique is described to couple and synchronize two transversely excited atmospheric (TEA) nitrogen lasers in an oscillator-amplifier configuration to obtain spatially coherent 1-nsec pulses at 337 nm with an energy/pulse of several hundred microjoules. The technique should be adaptable to other very high gain laser systems whose operation terminates so quickly as to render optical resonators impractical.
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Ernest E. Bergmann (1977) studied this question.
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