Abstract

PbS quantum-dot-doped glasses are demonstrated as saturable absorber Q-switches for 2μm holmium lasers. Q-switched pulses from Ho3+:Y3Sc2Al3O12 and Ho3+:Y3Al5O12 lasers of 50 and 70    ns in duration, respectively, have been obtained demonstrating up to 13% of energy conversion efficiency from free-running to Q-switched output.

© 2006 Optical Society of America

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