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A transversely extended, flat-flat monolithic Nd:YAG laser cavity was pumped by a two-dimensional laser-diode array to form an array of cw microchip laser emitters with total output power of 9.8 W for an incident pump power of 38.5 W. The ensemble optical efficiency was 25.5%, the slope efficiency was 32.5%, and the beams were shown to have excellent spatial mode quality and parallelism.
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Nabors et al. (1992) studied this question.
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