Diode-Pumped Ho-Doped KLu(WO<sub>4</sub>)<sub>2</sub> Laser at 2.08 μm
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概要
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We report on the efficient continuous-wave diode-pumped laser operation of Ho in the monoclinic KLu(WO<sub>4</sub>)<sub>2</sub> crystal at ${\sim}2080$ nm, resonantly pumped at a wavelength of ${\sim}1941$ nm by a fiber-coupled GaSb diode stack. A maximum output power of 408 mW and a slope efficiency of 54.5% with respect to the absorbed pump power were achieved. A comparison of the laser performance within the Ho-doped KRE(WO<sub>4</sub>)<sub>2</sub> (Ho:KRE(WO<sub>4</sub>)<sub>2</sub>) family of monoclinic crystals showed a slightly superior performance of Ho:KY(WO<sub>4</sub>)<sub>2</sub>, achieving a maximum output power of 438 mW and a slope efficiency of 58.8% under identical conditions.
- 2011-07-25
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