Abstract

A high-power longitudinally pumped Nd:YAG laser using direct pumping into the upper laser level is demonstrated. With an absorbed pump power of $438\mathrm{W}$ an output power of $250\mathrm{W}$ was realized, which results in an optical-to-optical efficiency of 57%. To the best of our knowledge, this is the first demonstration of a high-output power $885\mathrm{nm}$ pumped laser design.

© 2006 Optical Society of America

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