| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Thermally managed ring-cavity design enables LED-pumped Nd,Ce:YAG continuous wave single-longitudinal-mode laser for cost-effective precision photonics |
| Rong-Rong Jiang(江容容)1, Rui-Ze Xia(夏瑞泽)1, Feng-Yang Xing(邢凤阳)1, Liang Chen(陈亮)1, Yang Chen(陈阳)1, Feng-Bo Zhang(张峰博)1, Huan-Yu Zuo(左环宇)1, Jian-Ping Shen(沈建平)1,†, and Ling-Hai Xie(解令海)2 |
1 College of Electronic and Optical Engineering & College of Flexible Electronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China |
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Abstract We present a continuous wave (CW) single-longitudinal-mode (SLM) laser with a ring cavity based on efficient light-emitting diodes (LEDs)-pumped Nd,Ce:YAG dual-rod laser modules. In the free-running regime, a maximum average power of 4.27 W at 1064 nm is obtained, corresponding to the highest optical conversion efficiency of 5.1{%} and a slope efficiency of 13.9{%}. When operating in SLM configuration, the laser maintains a stable CW output of 200 mW with beam quality factors ($M^2$) measuring 1.44 and 1.30 along orthogonal $x$- and $y$-axes respectively. Spectral analysis reveals an emission linewidth of 70.76 MHz at maximum SLM output. This work represents, to the authors' knowledge, both the first successful implementation and the highest recorded performance characteristics for an LED-pumped Nd,Ce:YAG CW SLM laser system utilizing ring cavity configuration.
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Received: 12 June 2025
Revised: 27 July 2025
Accepted manuscript online: 15 August 2025
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| Fund: Project supported by the Fund from Nanjing University of Posts and Telecommunications, China (Grant Nos. KH1060325073, POCC2025M05, and NY225119) and the Key Research and Research and Development Program of Shandong Province, China (Grant No. 2021CXGC010202). |
Corresponding Authors:
Jian-Ping Shen
E-mail: jianpingshen@njupt.edu.cn
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Cite this article:
Rong-Rong Jiang(江容容), Rui-Ze Xia(夏瑞泽), Feng-Yang Xing(邢凤阳), Liang Chen(陈亮), Yang Chen(陈阳), Feng-Bo Zhang(张峰博), Huan-Yu Zuo(左环宇), Jian-Ping Shen(沈建平), and Ling-Hai Xie(解令海) Thermally managed ring-cavity design enables LED-pumped Nd,Ce:YAG continuous wave single-longitudinal-mode laser for cost-effective precision photonics 2026 Chin. Phys. B 35 034203
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