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Experimental and theoretical research on laser diode side-pumped Tm,Ho:YAG laser

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Abstract

A compact high-power laser diode (LD) side-pumped Tm,Ho:YAG laser at 2.09 μm was experimentally and theoretically investigated. Using a Tm,Ho:YAG crystal rod with a high dopant concertation ratio (3.0 at.% Tm3+ and 0.1 at.% Ho3+) and carefully optimizing the laser system design, a maximum continuous-wave (CW) output power of 87.7 W was achieved at a near room temperature (RT) of 12 ℃, corresponding to an optical-to-optical (o–o) efficiency of 13.3% and a slope efficiency of 21.2%. To the best of our knowledge, this represents the highest output power ever reported for a Tm–Ho co-doped solid-state laser. Furthermore, we numerically analyzed the multimode laser operation with a modified co-operative up-conversion rate. The agreement between the simulation results and the experimental data indicated that a high dopant concentration ratio with low up-conversion losses was favorable for achieving high-power output of the Tm,Ho:YAG lasers, thus paving the way for further advancements in Tm–Ho co-doped lasers.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Acknowledgements

This work was supported by the National Special Support Program for High-level Talents Science and Technology (No. SQ2022RA24910010) and the Technical Institute of Physics and Chemistry (TIPC) Director’s Fund (E3A9H103, E0A9H101)

Funding

Technical Institute of Physics and Chemistry (TIPC) Director’s Fund,E3A9H103,E0A9H101,National Special Support Program for High-level Talents Science and Technology, No. SQ2022RA24910010

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Authors and Affiliations

  1. Key Lab of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    Jian-Hong Wu, Shi-Feng Du, Yong Bo, Zhi-Chao Wang, Yun Gao, Hai-Long Wang, De-Xing Liu, Da-Fu Cui & Qin-Jun Peng

  2. Key Lab of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    Jian-Hong Wu, Shi-Feng Du, Yong Bo, Zhi-Chao Wang, Yun Gao, Hai-Long Wang, De-Xing Liu, Da-Fu Cui & Qin-Jun Peng

  3. Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan, 250000, China

    Shi-Feng Du, Yong Bo, Zhi-Chao Wang, Yun Gao, Hai-Long Wang, De-Xing Liu, Da-Fu Cui & Qin-Jun Peng

  4. University of Chinese Academy of Sciences, Beijing, 100190, China

    Jian-Hong Wu

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  1. Jian-Hong Wu
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Contributions

Jian-Hong Wu: Methodology, Validation, Formal analysis, Writing—Original draft preparation.

Shi-Feng Du:Conceptualization, Validation, Data curation, Resources.

Yong Bo:Conceptualization, Supervision, Resources.

Zhi-Chao: Wang:Data curation, Supervision.

Yun Gao: Methodology, Investigation.

Hai-Long Wang:Investigation, Data Curation.

De-Xing Liu:Investigation, Formal analysis.

Da-Fu Cui:Manuscript revision.

Qin-Jun Peng:Resources, Supervision.

All authors reviewed the manuscript.

Corresponding author

Correspondence to Shi-Feng Du.

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Wu, JH., Du, SF., Bo, Y. et al. Experimental and theoretical research on laser diode side-pumped Tm,Ho:YAG laser. Appl. Phys. B 130, 55 (2024). https://doi.org/10.1007/s00340-024-08192-2

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