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| 可调脉冲宽度的调Q掺铥双包层光纤激光器 | |
| 引用本文： | 张灵聪,杜戈果,赵俊清,郭春雨,阮双琛.可调脉冲宽度的调Q掺铥双包层光纤激光器[J].应用光学,2013,34(2):363-367. |
| 作者姓名： | 张灵聪 杜戈果 赵俊清 郭春雨 阮双琛 |
| 作者单位： | 1.深圳市激光工程重点实验室，广东 深圳 518060；2.先进光学精密制造技术广东普通高校重点 实验室（深圳大学），广东 深圳 518060；3.深圳大学 电子科学与技术学院，广东 深圳 518060 |
| 基金项目： | 国家自然科学基金(61275144)；深圳市科技研发基金基础研究计划(1104300029783024) |
| 摘 要： | 在激光器输出平均功率一定的情况下，峰值功率主要取决于调制频率和脉冲宽度。这使得脉冲宽度的调节具有一定的实际应用价值。对调Q掺铥双包层光纤激光器进行研究，首先确定了激光器的最佳输出透过率，在65%最佳透过率时，得到2 μm激光的输出功率3.9 W，斜率效率为31%。外接一个信号发生器，信号门宽从12 μs变化到18 μs，并测量了调制频率分别在30 kHz、40 kHz和50 kHz时输出脉冲宽度的变化情况，得到了555.6 W的最高峰值功率，实现了脉冲宽度从163.4 ns到207.9 ns的变化。实验情况证实了用外接信号发生器能有效控制激光器的输出脉冲宽度。 |
| 关 键 词： | 铥 双包层光纤 可调脉冲宽度 声光调Q 光纤激光器 |
| 收稿时间： | 2012/9/29 |
Adjustable pulse width thulium-doped Q-switched double-clad fiber laser |
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| ZHANG Ling-cong,DU Ge-guo,ZHAO Jun-qing,GUO Chun-yu,RUAN Shuang-chen.Adjustable pulse width thulium-doped Q-switched double-clad fiber laser[J].Journal of Applied Optics,2013,34(2):363-367. | |
| Authors: | ZHANG Ling-cong DU Ge-guo ZHAO Jun-qing GUO Chun-yu RUAN Shuang-chen |
| Affiliation: | 1. Shenzhen Key Laboratory of Laser Engineering, Shenzhen 518060, China;
2. Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong College, Shenzhen518060, China; 3. College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China |
| Abstract: | The peak power is determined by the modulation frequency and pulse width with the average output power of laser settled, thus the tunability of pulse width has its value in practice.The thulium-doped Q-switched double-clad fiber laser was investigated. With optimum transmissivity of 65% the output power of 2 μm laser was 3.9 W and the corresponding slope efficiency was 31%. The signal gate width was adjusted from 12 μs to 18 μs with the external signal generator. Pulse width was measured at modulation frequency of 30 kHz, 40 kHz and 50 kHz, and maximum peak power of 555.6 W was attained. The pulse width varied from 163.4 ns to 207.9 ns. The experiment result shows pulse width of laser can be effectively controlled by using external signal generator. |
| Keywords: | thulium double-clad fiber tunable pulse width acousto-optic Q-switch fiber laser |
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