中国物理B ›› 2020, Vol. 29 ›› Issue (8): 84205-084205.doi: 10.1088/1674-1056/ab8ac4

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇    下一篇

High efficiency sub-nanosecond electro-optical Q-switched laser operating at kilohertz repetition frequency

Xin Zhao(赵鑫), Zheng Song(宋政), Yuan-Ji Li(李渊骥), Jin-Xia Feng(冯晋霞), Kuan-Shou Zhang(张宽收)   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2020-02-29 修回日期:2020-03-23 出版日期:2020-08-05 发布日期:2020-08-05
  • 通讯作者: Yuan-Ji Li E-mail:liyuanji@sxu.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0405203) and the Shanxi "1331 Project" Key Subjects Construction, China (Grant No. 1331KSC).

High efficiency sub-nanosecond electro-optical Q-switched laser operating at kilohertz repetition frequency

Xin Zhao(赵鑫)1, Zheng Song(宋政)1, Yuan-Ji Li(李渊骥)1,2, Jin-Xia Feng(冯晋霞)1,2, Kuan-Shou Zhang(张宽收)1,2   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • Received:2020-02-29 Revised:2020-03-23 Online:2020-08-05 Published:2020-08-05
  • Contact: Yuan-Ji Li E-mail:liyuanji@sxu.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0405203) and the Shanxi "1331 Project" Key Subjects Construction, China (Grant No. 1331KSC).

摘要: Based on a theoretical model of Q-switched laser with the influences of the driving signal sent to the Pockels cell and the doping concentration of the gain medium taken into account, a method of achieving high energy sub-nanosecond Q-switched lasers is proposed and verified in experiment. When a Nd:YVO4 crystal with a doping concentration of 0.7 at.% is used as a gain medium and a driving signal with the optimal high-level voltage is applied to the Pockels cell, a stable single-transverse-mode electro-optical Q-switched laser with a pulse width of 0.77 ns and a pulse energy of 1.04 mJ operating at the pulse repetition frequency of 1 kHz is achieved. The precise tuning of the pulse width is also demonstrated.

关键词: milijoule level sub-nanosecond laser, kilohertz repetition frequency, doping concentration of laser crystal, tunable pulse width

Abstract: Based on a theoretical model of Q-switched laser with the influences of the driving signal sent to the Pockels cell and the doping concentration of the gain medium taken into account, a method of achieving high energy sub-nanosecond Q-switched lasers is proposed and verified in experiment. When a Nd:YVO4 crystal with a doping concentration of 0.7 at.% is used as a gain medium and a driving signal with the optimal high-level voltage is applied to the Pockels cell, a stable single-transverse-mode electro-optical Q-switched laser with a pulse width of 0.77 ns and a pulse energy of 1.04 mJ operating at the pulse repetition frequency of 1 kHz is achieved. The precise tuning of the pulse width is also demonstrated.

Key words: milijoule level sub-nanosecond laser, kilohertz repetition frequency, doping concentration of laser crystal, tunable pulse width

中图分类号:  (Design of specific laser systems)

  • 42.60.By
42.60.Gd (Q-switching)