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Double-Arched LDA Stagger-Pumped Electro-Optic Q-Switched Nd:YAG Green Laser Using KTP Double-Crystal Extracavity Frequency Doubling

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Journal of Russian Laser Research Aims and scope

Abstract

We develop a laser utilizing second harmonic generation that exhibits both high single-pulse energy and high beam quality. The system starts with a double-arched laser-diode-array stagger-pumped electro-optic Q-switched Nd:YAG with a thermal lensing compensated convex-concave resonator. The 1,064 nm output beam is then frequency doubled in an extracavity KTP double-crystal assembly that offsets birefringence walk-off. We obtain a maximum single-pulse energy of 72.7 mJ at 532 nm with 176 mJ at 1,064 nm. The corresponding optical-to-optical conversion efficiency is 41.3%, and the pulse width is 9.2 ns at a repetition rate of 20 Hz. The beam quality factor M2 is 1.83 in both horizontal and vertical directions at the maximum output energy, and the energy stability is better than 3% across half an hour.

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Authors and Affiliations

  1. Jilin Key Laboratory of Solid Laser Technology and Applications School of Science, Changchun University of Science and Technology, Changchun, 130022, People’s Republic of China

    Li Yue, Chen Xinyu, Yu Yongji, Wang Chao & Jin Guangyong

Authors
  1. Li Yue
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  2. Chen Xinyu
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  3. Yu Yongji
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  4. Wang Chao
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  5. Jin Guangyong
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Correspondence to Jin Guangyong.

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Yue, L., Xinyu, C., Yongji, Y. et al. Double-Arched LDA Stagger-Pumped Electro-Optic Q-Switched Nd:YAG Green Laser Using KTP Double-Crystal Extracavity Frequency Doubling. J Russ Laser Res 37, 598–603 (2016). https://doi.org/10.1007/s10946-016-9612-6

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  • DOI: https://doi.org/10.1007/s10946-016-9612-6

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