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355 nm Ultraviolet Nanosecond Lasers Produced by Frequency Doubling in K3B6O10Br Nonlinear Optical Crystal

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Abstract

We demonstrate a 355 nm ultraviolet nanosecond laser produced by the type I phase-matched frequency doubling in a K3B6O10Br (KBOB) nonlinear optical crystal. The use of 5022 μJ, 710 nm pump pulses at 10 Hz repetition rate produces 4.273 ns, 355 nm, 717 μJ pulses that corresponds to a frequency doubling conversion efficiency of 14.3%. The energy instability of the frequency-doubled pulse train measured is less than ±1% for maximum output pulse energy (717 μJ). Our experimental results show that KBOB is a promising nonlinear optical crystal for generating ultraviolet nanosecond laser pulses through frequency doubling.

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Correspondence to Min Zhang.

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Manuscript submitted by the authors in English on March 5, 2020.

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Wu, Y., Zhang, M., Zhang, L. et al. 355 nm Ultraviolet Nanosecond Lasers Produced by Frequency Doubling in K3B6O10Br Nonlinear Optical Crystal. J Russ Laser Res 41, 246–249 (2020). https://doi.org/10.1007/s10946-020-09871-z

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  • DOI: https://doi.org/10.1007/s10946-020-09871-z

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