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Efficient laser operation with Yb-doped silicates under diode-pumping

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Abstract

Laser action of a new Yb-doped crystal Yb3+:Lu2SiO5 (Yb:LSO) under high power diode-pumping (15 W) is reported. Performances are compared to Yb:YSO (Lu2SiO5), another Yb-doped crystal belonging to the oxyorthosilicate family. For both crystals, more than 7 W of laser radiation around 1 µm was obtained under 14.4 W of incident pump power at 978 nm, leading to optical conversions higher than 50 %. Finally, both crystals demonstrate little sensitivity to pump wavelength drift and exhibit broad tunability at a multiwatt level. More than 4 W over 50 nm and 60 nm have been obtained respectively for Yb:LSO and Yb:YSO.

© 2005 Optical Society of America

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