Efficient High-Power Ho:YAG Laser Pumped by Dual-End-Diode-Pumped Tm:YLF Laser


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Abstract

We report a Ho:YAG (Ho-doped yttrium aluminum garnet) laser pumped by a dual-end-diode-pumped Tm:YLF (Tm-doped yttrium lithium fluoride) laser to obtain an efficient experimental device with high output-power characteristics. We study the influence of the specific values of the output coupling mirror transmittance, the resonant cavity length, and the radius of curvature of the output coupling mirror on the Ho:YAG laser output characteristics. Under optimum experimental conditions, under which the output coupling mirror transmittance was 30%, the resonant cavity length was 25 mm and the output coupling mirror radius of curvature was 300 mm, and the maximum pumping power of the dual-end-diode-pumped Tm:YLF laser was 15.2 W. We obtain an efficient high-power 2.122-μm laser output of 7.98 W from the Ho:YAG laser. The optical-to-optical conversion efficiency is 52.5%, and the beam quality factor figures are Mx2 = 2.89 and My2 = 2.97.

About the authors

Li Yue

Jilin Key Laboratory of Solid Laser Technology and Application School of Science, Changchun University of Science and Technology

Email: jgycust@163.com
China, Changchun, 130022

Chen Xinyu

Jilin Key Laboratory of Solid Laser Technology and Application School of Science, Changchun University of Science and Technology

Email: jgycust@163.com
China, Changchun, 130022

Bai Fang

Jilin Key Laboratory of Solid Laser Technology and Application School of Science, Changchun University of Science and Technology

Email: jgycust@163.com
China, Changchun, 130022

Liu Jingliang

Jilin Key Laboratory of Solid Laser Technology and Application School of Science, Changchun University of Science and Technology

Email: jgycust@163.com
China, Changchun, 130022

Huang Zhulong

Jilin Key Laboratory of Solid Laser Technology and Application School of Science, Changchun University of Science and Technology

Email: jgycust@163.com
China, Changchun, 130022

Wu Chunting

Jilin Key Laboratory of Solid Laser Technology and Application School of Science, Changchun University of Science and Technology

Email: jgycust@163.com
China, Changchun, 130022

Jin Guangyong

Jilin Key Laboratory of Solid Laser Technology and Application School of Science, Changchun University of Science and Technology

Author for correspondence.
Email: jgycust@163.com
China, Changchun, 130022

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