Simultaneous Giant Pulses from Five Ruby Laser Oscillators

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Abstract
A laser system using bleachable‐filter Q‐switching has enabled us to obtain simultaneous ``giant pulses'' from five ruby laser oscillators. The beams from the different oscillators were found to be phase‐locked; the beam divergence was limited by the initial ruby quality. Two other systems for obtaining simultaneous giant pulses were investigated. One involved using the giant pulse from one oscillator to switch the bleachable cells in other oscillators; the other consisted of feeding the giant pulse from one oscillator into a branching chain of amplifiers. These latter systems proved less desirable for expansion to a large number of laser rods.

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