Research on pulsed laser damaged of TGG crystals

Li Jun; Zhou Qiang; Wang Tao; Jiang Hang; Xiao Likang; Liu Jin; Qiu Rong

doi:10.11884/HPLPB202537.250103

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Li Jun, Zhou Qiang, Wang Tao, et al. Research on pulsed laser damaged of TGG crystals[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250103

Citation:

Li Jun, Zhou Qiang, Wang Tao, et al. Research on pulsed laser damaged of TGG crystals[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250103

Li Jun, Zhou Qiang, Wang Tao, et al. Research on pulsed laser damaged of TGG crystals[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250103

Citation:

Li Jun, Zhou Qiang, Wang Tao, et al. Research on pulsed laser damaged of TGG crystals[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250103

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Research on pulsed laser damaged of TGG crystals

doi: 10.11884/HPLPB202537.250103

1.
Ninth Research Institute, China Electronics Technology Group, Mianyang 621900, China
2.
School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang 621010, China

Received Date: 2025-04-28
Accepted Date: 2025-05-30
Rev Recd Date: 2025-06-12

Available Online: 2025-07-07

Abstract

Abstract

This article mainly investigated on the incident and exit surfaces of terbium gallium garnet (TGG) magneto-optical elementsby damaged by the laser with wavelength of 1064 nm through pump-probe imaging technology. The damage characteristics of terbium gallium garnet elements under fundamental 1064 nm pulse laser irradiation are studied. The results indicated that the coated TGG element exhibits a lower damage threshold at the incident surface compared with the exit surface, and the difference in damage morphology between the entrance and exit surface was mainly influenced by laser-induced plasma effects. It was found that the initial damage on the TGG incident surface gmainly came from impurities and defects in the coatings, and the separation of the film layer under high energy would be happened; The exit surface damage of coated TGG components was mainly induced by impurity defects in the substrate material, and the size of damage pits was increased gradually under higher laser energy. By analyzing the influence of factors such as laser pulse energy, plasma effect, and material damage response on the laser damage threshold, it provided important and significant reference for improving the anti-damage ability of TGG magneto-optical materials under high-power laser irradiation.
- terbium gallium garnet,
- laser damage,
- damage threshold,
- ultrafast imaging

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References(23)

References

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