| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Dual-wavelength femtosecond Tm: LuYO3 ceramic laser in-band pumped by 1650 nm Er:YAG laser |
| Jinfang Yang(杨金芳)1,2, Purui An(安浦瑞)1,2, Chao Bi(毕超)1,2, Taotao He(何涛涛)1,2, Shichao Yuan(袁诗超)1,2, Xinye Tian(田新叶)1,2, Man Wan(汪满)1,2, Yongle Zhu(朱永乐)1,2, Zhong Dong(董忠)1,2, and Weijun Ling(令维军)1,2,3,† |
1 Gansu Provincial All Solid-State Laser Engineering Research Center, Tianshui Normal University, Tianshui 741001, China;
2 Engineering Research Center of Integrated Circuit Packaging and Testing, Ministry of Education, Tianshui 741001, China;
3 Gansu Integrated Circuit Packaging and Testing Industry Research Institute, Tianshui 741001, China |
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Abstract An in-band pumped dual-wavelength femtosecond Tm:LuYO$_{3}$ ceramic laser is demonstrated for the first time, to the best of our knowledge. In the continuous wave (CW) regime, a maximum output power of 1.03 W with a slope efficiency of 28.7% is obtained; the center wavelength can be independently tuned within the range of 1962 nm to 2070 nm using output couplers (OCs) with different transmittance rates. A single-wavelength laser at 2059 nm is achieved with the shortest pulse duration of 313 fs, a maximum average output power of 374 mW, and operating at a repetition rate of 93.13 MHz. Using a 3% OC, dual-wavelength femtosecond pulses at 1950 nm and 2047 nm were simultaneously generated. Furthermore, the phenomenon of wavelength redshift was observed as the pump power was increased. These experimental results indicate that in-band pump technology combined with Tm:LuYO$_{3}$ ceramics could be a potential means to reduce the thermal effect and scale the output power and conversion efficiency for 2 μm ultrafast lasers.
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Received: 10 September 2025
Revised: 13 November 2025
Accepted manuscript online: 17 November 2025
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PACS:
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.72.Ai
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(Infrared sources)
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| Fund: This work was supported by TheNational Natural Science Foundation of China (Grant Nos. 62405221 and 62165012), Gansu Province University Industry Support Plan Project (Grant No. 2024CYZC-44), Key Talent Project of Gansu Province (Grant No. 2025RCXM023), Major Cultivation Project of University Research and Innovation Platform of Gansu Provincial Department of Education (Grant No. 2024CXPT-12), Tianshui Strong Science and Technology Award Special Project (Grant No. TS-STK-2024A- 277), Qinzhou District Science and Technology Plan Project (Grant No. 2024-SHFZG-8159), and Basic Research Program of Gansu Provincial Science and Technology Plan (Grant Nos. 25JRRE009, 25JRZE003, and 25JRRE003). |
Corresponding Authors:
Weijun Ling
E-mail: wjlingts@sina.com
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Cite this article:
Jinfang Yang(杨金芳), Purui An(安浦瑞), Chao Bi(毕超), Taotao He(何涛涛), Shichao Yuan(袁诗超), Xinye Tian(田新叶), Man Wan(汪满), Yongle Zhu(朱永乐), Zhong Dong(董忠), and Weijun Ling(令维军) Dual-wavelength femtosecond Tm: LuYO3 ceramic laser in-band pumped by 1650 nm Er:YAG laser 2026 Chin. Phys. B 35 074202
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