摘要
A novel Er:YAG laser system operating at 1645 nm with high pulse-repetition-frequency(PRF)of kHz level is demonstrated.A ring cavity with double gain medium end-pumped by two fiber lasers is utilized to obtain high pulse energy.A novel‘triple-reflection’configuration on a piezoelectric actuator(PZT)is adopted to achieve high-repetition-rate at 3-kHz operation with the ramp-fire locking method.Single frequency pulses with maximum average power of 18.3 W at 3 kHz are obtained,and the pulse duration time is 318 ns.The full line width at half maximum(FWHM)of the pulses measured by the heterodyne technique is 1.71 MHz at 3 kHz.To the best of our knowledge,this is the highest PRF single-frequency laser pulses achieved based Er:YAG gain medium.
作者
黄帅
王庆
张濛
陈朝勇
王凯鑫
高明伟
高春清
Shuai Huang;Qing Wang;Meng Zhang;Chaoyong Chen;Kaixin Wang;Mingwei Gao;Chunqing Gao(School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China;Key Laboratory of Information Technology,Ministry of Industry and Information Technology,Beijing Institute of Technology,Beijing 100081,China)
基金
the National Key Research and Development Program of China(Grant No.2017YFB0405203)
the National Natural Science Foundation of China(Grant No.61627821).