Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

doi:10.1088/1674-1056/ad34c9

中国物理B ›› 2024, Vol. 33 ›› Issue (7): 74207-074207.doi: 10.1088/1674-1056/ad34c9

Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

Jian-Ping Shen(沈建平)†, Peng Lu(芦鹏), Shao-Cong Xu(徐少聪), Rong-Rong Jiang(江容容), Yang Chen(陈阳), Liang Chen(陈亮), and Feng-Yang Xing(邢凤阳)

College of Electronic and Optical Engineering & College of Flexible Electronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

收稿日期:2024-01-29 修回日期:2024-03-10 接受日期:2024-03-18 出版日期:2024-06-18 发布日期:2024-06-28
通讯作者: Jian-Ping Shen E-mail:jianpingshen@njupt.edu.cn
基金资助:
Project supported by the Fund from Nanjing University of Posts and Telecommunications, China (Grant Nos. JUH219002 and JUH219007) and by the Key Research and Development Program of Shandong Province, China (Grant No. 2021CXGC010202).

Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

Jian-Ping Shen(沈建平)†, Peng Lu(芦鹏), Shao-Cong Xu(徐少聪), Rong-Rong Jiang(江容容), Yang Chen(陈阳), Liang Chen(陈亮), and Feng-Yang Xing(邢凤阳)

College of Electronic and Optical Engineering & College of Flexible Electronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2024-01-29 Revised:2024-03-10 Accepted:2024-03-18 Online:2024-06-18 Published:2024-06-28
Contact: Jian-Ping Shen E-mail:jianpingshen@njupt.edu.cn
Supported by:
Project supported by the Fund from Nanjing University of Posts and Telecommunications, China (Grant Nos. JUH219002 and JUH219007) and by the Key Research and Development Program of Shandong Province, China (Grant No. 2021CXGC010202).

摘要/Abstract

摘要： A high-performance LED-side-pumped two-rod Nd,Ce:YAG laser with continuous-wave (CW) and acousto-optical (A-O) $Q$-switched operation is demonstrated in this work. A symmetrically shaped flat-flat cavity with two identical LED-side-pumped laser modules is employed for power scalability. In the CW regime, the maximum output average power of laser at 1064 nm is 4.41 W, corresponding to a maximum optical conversion efficiency of 5.3% and a slope efficiency is 12.4%. In the active $Q$-switched regime, the pulse energy of laser reaches as high as 0.89 mJ at a repetition rate of 800 Hz with a pulse width of 457.2 ns, the corresponding highest peak output power is 1.94 kW and the $M^{2}$ factor is measured to be about 8.8. To the best of the authors' knowledge, this is the first demonstration and the highest performance of a CW LED-side-pumped two-rod laser Nd,Ce:YAG with Watt-level output reported so far.

关键词: Watt-level, LED-pumped, CW, Nd,Ce:YAG, actively $Q$-switched operation

Abstract: A high-performance LED-side-pumped two-rod Nd,Ce:YAG laser with continuous-wave (CW) and acousto-optical (A-O) $Q$-switched operation is demonstrated in this work. A symmetrically shaped flat-flat cavity with two identical LED-side-pumped laser modules is employed for power scalability. In the CW regime, the maximum output average power of laser at 1064 nm is 4.41 W, corresponding to a maximum optical conversion efficiency of 5.3% and a slope efficiency is 12.4%. In the active $Q$-switched regime, the pulse energy of laser reaches as high as 0.89 mJ at a repetition rate of 800 Hz with a pulse width of 457.2 ns, the corresponding highest peak output power is 1.94 kW and the $M^{2}$ factor is measured to be about 8.8. To the best of the authors' knowledge, this is the first demonstration and the highest performance of a CW LED-side-pumped two-rod laser Nd,Ce:YAG with Watt-level output reported so far.

Key words: Watt-level, LED-pumped, CW, Nd,Ce:YAG, actively $Q$-switched operation

中图分类号: (Lasers)

42.55.-f

42.55.Ye (Raman lasers) 42.55.Xi (Diode-pumped lasers) 42.60.Gd (Q-switching)

Jian-Ping Shen(沈建平), Peng Lu(芦鹏), Shao-Cong Xu(徐少聪), Rong-Rong Jiang(江容容), Yang Chen(陈阳), Liang Chen(陈亮), and Feng-Yang Xing(邢凤阳). Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser[J]. 中国物理B, 2024, 33(7): 74207-074207.

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Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

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