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Chin. Phys. B, 2020, Vol. 29(8): 084204    DOI: 10.1088/1674-1056/ab9441

A 3-kHz Er: YAG single-frequency laser with a ‘triple-reflection’ configuration on a piezoelectric actuator

Shuai Huang(黄帅)1,2, Qing Wang(王庆)1,2, Meng Zhang(张濛)1,2, Chaoyong Chen(陈朝勇)1,2, Kaixin Wang(王凯鑫)1,2, Mingwei Gao(高明伟)1,2, Chunqing Gao(高春清)1,2
1 School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China;
2 Key Laboratory of Information Technology, Ministry of Industry and Information Technology, Beijing Institute of Technology, Beijing 100081, China
Abstract  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.
Keywords:  Er:YAG      injection-seeded      single-frequency      high pulse-repetition-frequency  
Received:  08 March 2020      Revised:  16 April 2020      Accepted manuscript online: 
PACS:  42.55.Xi (Diode-pumped lasers)  
  42.60.Gd (Q-switching)  
  42.60.By (Design of specific laser systems)  
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0405203) and the National Natural Science Foundation of China (Grant No. 61627821).
Corresponding Authors:  Qing Wang     E-mail:

Cite this article: 

Shuai Huang(黄帅), Qing Wang(王庆), Meng Zhang(张濛), Chaoyong Chen(陈朝勇), Kaixin Wang(王凯鑫), Mingwei Gao(高明伟), Chunqing Gao(高春清) A 3-kHz Er: YAG single-frequency laser with a ‘triple-reflection’ configuration on a piezoelectric actuator 2020 Chin. Phys. B 29 084204

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