Continuous-wave oscillation of thulium-sensitized holmium-doped silica fiber laser
We have observed oscillation in a Tm^ 3+ and Ho^ 3+ codoped silica fiber from the^ 5I_7?^
5I_8 transition of Ho^ 3+ in the 2-μm region, by pumping the fiber laser into a Tm^ 3+
absorption between 800 and 830 nm. By a change in the cavity length, the laser was tunable
between 2.037 and 2.096 μm. When the laser was pumped with a Ti: sapphire laser at 820
nm, an absorbed threshold power of 214 mW, a slope efficiency of 4.2%, and maximum
extracted power of 12.5 mW were measured.
5I_8 transition of Ho^ 3+ in the 2-μm region, by pumping the fiber laser into a Tm^ 3+
absorption between 800 and 830 nm. By a change in the cavity length, the laser was tunable
between 2.037 and 2.096 μm. When the laser was pumped with a Ti: sapphire laser at 820
nm, an absorbed threshold power of 214 mW, a slope efficiency of 4.2%, and maximum
extracted power of 12.5 mW were measured.
We have observed oscillation in a Tm^3+ and Ho^3+ codoped silica fiber from the ^5I_7 ? ^5I_8 transition of Ho^3+ in the 2-μm region, by pumping the fiber laser into a Tm^3+ absorption between 800 and 830 nm. By a change in the cavity length, the laser was tunable between 2.037 and 2.096 μm. When the laser was pumped with a Ti:sapphire laser at 820 nm, an absorbed threshold power of 214 mW, a slope efficiency of 4.2%, and maximum extracted power of 12.5 mW were measured.
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