基于全保偏八字腔结构锁模的光纤激光器及其功率放大  

All-PM “Figure-of-eight” Cavity Mode-locked Fiber Laser and Its Power Amplification

作　　者：温如华 胡澄之 魏凯华[2] 张兵[1] 乐文杰 吴波[1] 姜培培[1] 沈永行[1] 

机构地区：[1]浙江大学光电科学与工程学院现代光学仪器国家重点实验室,杭州310027 [2]杭州电子科技大学生命信息与仪器工程学院,杭州310018

出　　处：《光子学报》2017年第5期113-118,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(No.11304277);国家高技术研究发展计划(No.ss2014AA020903);浙江省自然科学基金(No.LQ16F050002)资助~~

摘　　要：采用包层泵浦的全保偏八字腔结构搭建了一种脉宽可调的掺镱锁模光纤激光器,实现了中心波长为1 064nm、重复频率为4.683 MHz、脉冲宽度可调范围为0.8~5ns、对应平均功率范围为74.8~429.7mW的耗散孤子共振方波脉冲输出.腔内无需偏振控制器,仅通过调节泵浦输入即可实现锁模状态的自启动,并能够长时间保持稳定,在剧烈振动条件下亦不会失锁.采用两级光纤放大器进行功率放大,实现了100 W的平均功率输出,峰值功率高达26.68kW.A Yb-doped mode-locked fiber laser with a tunable pulse width was built by using a cladding pumped all-PM（Polarization Maintaining） ＂figure-of-eight＂ cavity. The Dissipative Soliton Resonance （DSR） square pulses with a central wavelength of 1 064 nm, a repetition rate of 4. 683 MHz, a tunable pulse width range from 0.8 ns to 5 ns and an average power range from 74.8 mW to 429.7 roW, are achieved. There is no polarization controller in the cavity. The mode locking state can be self-started only by adjusting the pump input, and then can be keep stable for a long time, and without lock-lose even under the condition of violent vibration. By using the two stage fiber amplifiers to amplify the power, the laser output with an average power of 100 W and the peak power as high as 26.68 kW is achieved.

关 键 词：激光器 掺镱锁模光纤激光器 非线性环形镜 耗散孤子共振方波脉冲 脉宽可调 

分 类 号：TN248.1[电子电信—物理电子学]