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基于反射式布拉格光栅和Fabry-Perot标准具组合的Nd∶YVO4单频激光器

Single-Frequency Nd∶YVO4 Laser Based on Reflective Bragg Grating Combined with Fabry-Perot Etalon

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摘要

报道了一种激光二极管端面连续抽运的稳定单频主动调Q Nd∶YVO4激光器。采用RBG与标准具组合的方式获得了稳定的高功率单频激光输出。RBG既作为输出耦合镜, 又作为纵模选择元件, 与标准具组合可进一步抑制多纵模, 增长谐振腔的光学腔长, 获得高功率输出。通过优化标准具的倾斜角度, 可使标准具与RBG的中心波长匹配, 并减小腔内插入损耗。最终在物理腔长为148.7 mm的条件下, 获得了功率为750 mW, 脉冲能量为75 μJ@10 kHz, 脉宽为8.3 ns的稳定的高功率单频激光输出。

Abstract

This study reports on a stable single-frequency active Q-switched Nd∶YVO4 laser end-pumped by a continuous-wave laser diode. The stable high power single-frequency laser output is obtained using reflective Bragg grating (RBG) and etalon. RBG is used as an output coupling mirror and a longitudinal mode selector, combining with etalon to further suppress multiple longitudinal modes, the optical cavity length is increased and high power output is achieved. By optimizing the tilt angle of etalon, the central wavelengths of etalon and RBG can be matched and the insertion loss in cavity can be reduced. Finally, at the physical cavity length of 148.7 mm, a high-power single-frequency laser output with an average power of 750 mW, a pulse energy of 75 μJ at a repetition rate of 10 kHz, and a pulse duration of 8.3 ns is obtained.

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中图分类号:TN248.1

DOI:10.3788/aos201939.0514002

所属栏目:激光器与激光光学

基金项目:国家自然科学基金(61378023); 北京市自然科学基金(4174085, KZ201610005006)

收稿日期:2018-12-07

修改稿日期:2019-01-17

网络出版日期:2019-01-23

作者单位    点击查看

胡星:北京工业大学激光工程研究院, 北京 100124
程德江:北京工业大学激光工程研究院, 北京 100124
王思博:北京工业大学激光工程研究院, 北京 100124
姜梦华:北京工业大学激光工程研究院, 北京 100124
惠勇凌:北京工业大学激光工程研究院, 北京 100124
雷訇:北京工业大学激光工程研究院, 北京 100124
李强:北京工业大学激光工程研究院, 北京 100124

联系人作者:李强(ncltlq@bjut.edu.cn)

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引用该论文

Hu Xing,Cheng Dejiang,Wang Sibo,Jiang Menghua,Hui Yongling,Lei Hong,Li Qiang. Single-Frequency Nd∶YVO4 Laser Based on Reflective Bragg Grating Combined with Fabry-Perot Etalon[J]. Acta Optica Sinica, 2019, 39(5): 0514002

胡星,程德江,王思博,姜梦华,惠勇凌,雷訇,李强. 基于反射式布拉格光栅和Fabry-Perot标准具组合的Nd∶YVO4单频激光器[J]. 光学学报, 2019, 39(5): 0514002

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