Spectroscopy and Laser Properties of Yb-Doped Gd
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概要
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We report the room-temperature spectroscopic properties and the continuous-wave and passive Q-switching laser operations of a new disorder crystal, Yb-doped Gd<inf>3</inf>Al<inf>x</inf>Ga<inf>5-x</inf>O<inf>12</inf>(Yb:GAGG). The peak absorption cross section is 0.56\times 10^{-20} cm<sup>2</sup>at 942 nm, while the main emission band is centered at 1024 nm with a peak cross section of 1.05\times 10^{-20} cm<sup>2</sup>and the full width at half maximum (FWHM) of 13.8 nm. The highest continuous-wave output power of 5.33 W is obtained with the optical--optical conversion efficiency of 41.6% and slope efficiency of 53.2%. In the passive Q-switching regime, with a V<sup>3+</sup>:YAG crystal as the saturable absorber, the highest output power, shortest pulse width, largest pulse energy and highest peak power achieved are 4.68 W, 24.7 ns, 93.8 μJ, and 3.8 kW, respectively. The results indicates that Yb:GAGG could be a potential laser crystal for high-power and ultrashort pulse generation.
- 2013-08-25
著者
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Tao Xu-tang
State Key Lab. Of Crystal Materials Shandong Univ.
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Wang Rui-Hua
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Jia Zhi-Tai
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Liu Xun-Min
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Zhang Bai-Tao
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Wang Zhao-Wei
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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He Jing-Liang
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Li Yan-Bin
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Liu Shan-De
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Tao Xu-tang
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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WANG Zhao-Wei
State Key Laboratory of Crystal Materials, Shandong University
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