We have obtained three-level continuous-wave laser operation at 985 nm with an Yb doped S-FAP bulk crystal pumped by a Ti:Sapphire laser. An output power of 250 mW for an incident pump power of 1.45 W has been achieved, which is the highest cw output power ever obtained to our knowledge at this wavelength with an Yb:doped crystal. The experimental results are in good agreement with the numerical model that we have developed.

© 2003 Optical Society of America

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