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Abstract
We present, to the best of our knowledge, the first demonstration of thermal, optical, and laser properties of ${\rm Yb}{:}{{\rm GdScO}_3}$ for potentially efficient ultrashort pulse lasers. The stimulated emission cross section at 1025 nm (E//c) is ${0.46} \times {{10}^{- 20}}\;{{\rm cm}^2}$ with the emission band width of 85 nm, even broader than the well-known ${\rm Yb}{:}{{\rm CaGdAlO}_4}$. It has quite a high thermal conductivity of ${5.54}\;{\rm W/}({\rm m\cdot K})$ at 50°C, comparable with Yb:YAG. In the continuous-wave regime, the maximum output power of 13.45 W at 1063.9 nm was generated with the optical-to-optical efficiency of 63.3%. These results suggest that the ${\rm Yb}{:}{{\rm GdScO}_3}$ crystal is a promising candidate for ultrashort pulse lasers.
© 2021 Optical Society of America
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