| 一种基于增益调制技术的全光纤化脉冲Yb光纤激光器 |
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| 引用本文： | 孙宏,魏凯华,钱凯,陈滔,杨丁中,姜培培,吴波,沈永行.一种基于增益调制技术的全光纤化脉冲Yb光纤激光器[J].光子学报,2013,42(1):43-47. |
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| 作者姓名： | 孙宏 魏凯华 钱凯 陈滔 杨丁中 姜培培 吴波 沈永行 |
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| 作者单位： | 现代光学仪器国家重点实验室;浙江大学 光电系,杭州 310027 |
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| 基金项目： | 国家自然科学基金(No.61078015)、国家重点基础研究发展计划(No.2011CB311803)和浙江省教育厅项目(No.Y200909758)资助 |
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| 摘 要： | 以波长为975 nm的半导体激光器作为泵浦源,周期性地脉冲泵浦一个包含Yb掺杂光纤和光纤光栅对的Yb光纤激光器,实现了基于增益调制技术的全光纤化高功率Yb光纤激光器的稳定脉冲输出.在50 kHz重频下,采用20 W的泵浦功率和2.4 μs的泵浦脉冲宽度,获得了1 060 nm波长脉冲宽度仅100 ns的稳定脉冲激光输出,单脉冲激光能量约为20 μJ.以此作为脉冲激光种子进行功率放大,获得了性能稳定的全光纤结构高功率脉冲激光输出,放大后单脉冲能量超过200 μJ,激光放大器斜率效率达到60%.
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| 关 键 词： | 光纤激光器 掺Yb3+ 脉冲激光 增益调制 |
| 收稿时间： | 2012-08-07 |
| 修稿时间： | 2012-10-19 |
Gain Switched All-fiberized Pulse Yb Fiber Laser |
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| State Key Laboratory of Modern Optical Instrumentation.Gain Switched All-fiberized Pulse Yb Fiber Laser[J].Acta Photonica Sinica,2013,42(1):43-47. |
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| Authors: | State Key Laboratory of Modern Optical Instrumentation |
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| Institution: | State Key Laboratory of Modern Optical Instrumentation; Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | A gain-switched Yb-doped pulse fiber laser which was periodically pumped by a pulsed Laser Diode (LD) centering at wavelength of 975 nm was reported. The pulsed Yb fiber laser was composed of a piece of Yb doped double cladding gain fiber and a pair of fiber Bragg gratings. Under pump power of 20 W and pulse duration of 2.4 μs at repetition rate of 50 kHz, stable laser pulse trains were obtained at 1 060 nm with pulse duration of 100 ns. The shot energy of every pulse was measured up to 20 μJ. Using this pulsed Yb fiber laser as the seed, a maser-oscillator power amplifier (MOPA) structured high power Yb laser was constructed with pulse energy exceeding 200 μJ. The slope efficiency of the MOPA was about 60%. |
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| Keywords: | Fiber laser Yb3+-doped Pulsed laser Gain switched |
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