Abstract

We report an efficient Q-switched Ho3+Pr3+-doped fluoride fiber laser, producing a peak power of 77 W, with pulse width of 78 ns. A slope efficiency of 20% with respect to the launched pump power was achieved. A TeO2 acousto-optic modulator allowed continuous tunability of the pulse repetition frequency from 40 to 300 kHz.

© 2012 Optical Society of America

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