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Waveguide-saturable absorber fabricated by femtosecond pulses in YAG : Cr 4 + crystal for Q-switched operation of Yb-fiber laser

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Abstract

A waveguide-saturable absorber with low propagation loss is fabricated by femtosecond pulses in YAG:Cr4+ crystal. Q-switch operation of a Yb fiber laser with the new saturable absorber having absorption saturation parameters similar to the bulk YAG:Cr4+ crystal is demonstrated.

© 2009 Optical Society of America

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