Abstract

Nearly quantum-defect-limited laser operation of a resonantly pumped Er3+:YVO4 at 1593.5nm is demonstrated. Maximum slope efficiency of 85% and true CW power of 13W at 1593.5nm were achieved with a beam propagation factor of M21.05. This slope efficiency is, to the best of our knowledge, the highest efficiency ever reported for a crystalline Er-doped laser.

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