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| 激光二极管抽运的高光束质量的Yb | |
| 引用本文： | 李磊,杨苏辉,孙文峰,赵长明.激光二极管抽运的高光束质量的Yb[J].中国激光,2004,31(11):1285-1288. |
| 作者姓名： | 李磊 杨苏辉 孙文峰 赵长明 |
| 作者单位： | 李磊:北京理工大学光电工程系, 北京100081 杨苏辉:北京理工大学光电工程系, 北京100081 孙文峰:北京理工大学光电工程系, 北京100081 赵长明:北京理工大学光电工程系, 北京100081 |
| 基金项目： | 军用固体激光技术国防科技重点实验室基金(00JS08.1.3.BQ0103)资助项目。 |
| 摘 要： | 演示了激光二极管(LD)端面抽运Yb∶YAG薄片固体激光器,抽运源是美国相干公司(COHERENT)光纤耦合输出半导体激光器,光纤输出芯径为800 μm,在940 nm处最大输出功率为13.56 W,由于光纤输出芯径较大,不利于抽运光和振荡光的模式匹配,为了得到较小的抽运光斑,采用了焦距比为30∶12的耦合透镜组压缩入射到晶体端面的抽运光光腰半径,晶体为原子掺杂浓度8 at.-%,几何尺寸为φ7 mm×1.6 mm国产Yb∶YAG晶体,整个实验装置采用温差电致冷(TEC)和循环水冷却方式,实验中得到了3.06 W的连续激光输出,激光器的斜率效率为33.1%,测得M2因子在x和y方向分别为1.54和1.73,具有良好的光束质量。 |
| 关 键 词： | 激光技术 Yb∶YAG薄片激光器 激光二极管抽运 光束质量 |
| 收稿时间： | 2003/7/16 |
LD-Pumped Yb∶YAG Chip Laser with High Beam Quality |
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| Abstract: | A laser diode (LD) end-pumped Yb∶YAG (Yb∶Y3Al5O12) chip laser has been demonstrated. The pumping source is a fiber coupled laser diode array with maximum output power of 13.56 W at 940 nm. The diameter of the fiber is 800 μm. Two lenses with focal length ratio of 30∶12 have been used to compress the pumping light into the laser crystal. 3.06 W continuous wave (CW) output power was obtained from the 8 at.-% doped, 1.6 mm thick Yb∶YAG crystal, the whole experiment set was cooled by thermoelectric cooler (TEC) and cooling water, slope efficiency was 33.1%, the M2 values were measured to be 1.54 and 1.73 in the x and y directions respectively. |
| Keywords: | laser technique Yb∶YAG chip laser LD-pumped beam quality |