[摘要]：We present continuous-wave laser operation at two wavelengths oscillating simultaneously and originating from two different active ions in a monoclinic co-doped (Ho, Tm):KLu(WO(4))(2) crystal. Dual-wavelength lasing is accomplished at room temperature using Ti:Sapphire laser pumping. The Ho-ion, lasing at 2061 nm and the Tm-ion, lasing at 1937 or 1919 nm, generate together a maximum output power of 244 mW with a maximum slope efficiency of 24.8%. Tuning with a birefringent filter is possible from 1854 to 2063 nm, with individual tuning ranges of 1854 to 1980 nm for Tm and 1971 to 2063 nm for Ho.
