| 光纤耦合二极管端泵2 μm CW双掺)Tm,Ho∶GdVO4激光器 |
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| 引用本文： | 姚宝权,张兴宝,王月珠,贺万俊,李玉峰,鞠有论. 光纤耦合二极管端泵2 μm CW双掺)Tm,Ho∶GdVO4激光器[J]. 光子学报, 2005, 34(7): 964-967 |
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| 作者姓名： | 姚宝权 张兴宝 王月珠 贺万俊 李玉峰 鞠有论 |
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| 作者单位： | 哈尔滨工业大学光电子技术研究所,哈尔滨,150001 |
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| 摘 要： | 同YLF和YAG 基质相比,在Tm-Ho∶GdVO4晶体中Tm3+离子在800 nm附近有非常强的和宽的吸收带,所以该晶体非常适合商品化的GaAlAs激光二极管泵浦.在液氮制冷晶体条件下,利用光纤耦合激光二极管及消色差光学耦合系统端面泵浦双掺5％Tm,0.5％Ho∶GdVO4晶体,在泵浦功率14 W、泵浦波长794 nm时,实现了2.048 μm激光输出,连续运转输出功率3.6 W,相应的光光转换效率为25.7％,斜率效率26.6%.相对于吸收的泵浦功率,光光转换效率为35%.由于Tm3+离子间的交叉弛豫效应,泵浦量子效率达到1.3.
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| 关 键 词： | 光纤耦合激光二极管 Tm,Ho∶GdVO4晶体 |
| 收稿时间： | 2004-05-14 |
| 修稿时间： | 2004-05-14 |
Fiber-coupled Diode End-pumped Double Tm, Ho: GdVO4 Laser |
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| Yao Baoquan,Zhang Xingbao,Wang Yuezhu,He Wanjun,Li Yufeng,Ju Youlun. Fiber-coupled Diode End-pumped Double Tm, Ho: GdVO4 Laser[J]. Acta Photonica Sinica, 2005, 34(7): 964-967 |
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| Authors: | Yao Baoquan Zhang Xingbao Wang Yuezhu He Wanjun Li Yufeng Ju Youlun |
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| Affiliation: | (Harbin Institute of Technology,Harbin 150001) |
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| Abstract: | A continuous wave diode-pumped Tm,Ho:GdVO4 laser operating at cryogenic temperature is reported. Tm,Ho∶GdVO_4 crystal has much stronger and broader absorption spectrum than Tm- Ho-codoped YLF and YAG,and is very favorable for diode pumping. Radiation from a fiber coupled diode (core diameter 0.4 mm, N.A. 0.3) is coupled into Tm(5% at.),Ho(0.5% at.)∶GdVO_4 crystal by a pair of achromatic lens for end pumping. Output power of 3.6 W at 2.048 μm is obtained under pump power of 14 W and emission wavelength of 794 nm. The optical-optical conversion efficiency is 25.7% and slope efficiency is 26.6%. Corresponding to the absorbed pumping power, the optical-optical conversion efficiency is up to 35%.Due to cross relaxation between Tm 3+ ions,pumping quantum efficiency of 1.3 is achieved. |
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| Keywords: | Fiber-coupled diode Tm Ho∶GdVO_4 crystal |
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