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100 Hz, 39.6 mJ compact linear polarization Q-switched Ho:YLF oscillator

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Abstract

High-energy linearly polarized Q-switched lasers are realized using a 1940 nm Tm-doped fiber laser to in-band pump a compact U-type Ho:YLF oscillator. When absorbing 44 W pump power, the laser output power under continuous-wave (cw) operation is 9.7 W, and the center laser wavelength is 2051.7 nm. Corresponding to 22% optical-to-optical conversion efficiency and up to 77.9% slope efficiency. The Q-switched Ho:YLF oscillator has a maximum single pulse energy of 39.6 mJ under a repetition rates of 100 Hz and absorption of 42.4 W pumping, and the pulsewidth is 47 ns. The beam quality M2 factors in the horizontal and vertical directions are 1.17 and 1.07, respectively.

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Authors and Affiliations

  1. National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, 150001, China

    D. Yan, S. N. Li, Y. L. Ju, T. Y. Dai & X. M. Duan

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  1. D. Yan
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  2. S. N. Li
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  3. Y. L. Ju
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Correspondence to Y. L. Ju.

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Yan, D., Li, S.N., Ju, Y.L. et al. 100 Hz, 39.6 mJ compact linear polarization Q-switched Ho:YLF oscillator. Appl. Phys. B 128, 70 (2022). https://doi.org/10.1007/s00340-022-07790-2

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  • DOI: https://doi.org/10.1007/s00340-022-07790-2

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