Abstract

A novel acousto-optic switch operation by a simple laser-diode pumped acousto-optic, Q-switched, ytterbium-doped, double-clad fiber laser is reported. Stable compressed Q-switched sub-40ns pulses with a beam quality factor (M2=2) are achieved at the repetition rate of 150kHz. Q-switched pulses of 20μJ pulse energy and 35ns pulse width are obtained at the repetition rate of 50kHz. Finally, a reasonable explanation of the novel Q-switched operation is presented.

© 2007 Optical Society of America

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