Irradiation damage distribution characteristics  of DKDP in large-aperture high-energy laser

Liu Chang; Ju Xin; Liu Baoan; Sun Xun; Zhang Lisong; Xu Mingxia; Ren Hongkai; Wei Liening; Wu Pengcheng; Li Yang; Dong Chao; Yan Chunyan

doi:10.11884/HPLPB202133.210198

Volume 33 Issue 11

Nov. 2021

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Article Navigation > High Power Laser and Particle Beams > 2021 > 33(11): 111013

Liu Chang, Ju Xin, Liu Baoan, et al. Irradiation damage distribution characteristics of DKDP in large-aperture high-energy laser[J]. High Power Laser and Particle Beams, 2021, 33: 111013. doi: 10.11884/HPLPB202133.210198

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Liu Chang, Ju Xin, Liu Baoan, et al. Irradiation damage distribution characteristics of DKDP in large-aperture high-energy laser[J]. High Power Laser and Particle Beams, 2021, 33: 111013. doi: 10.11884/HPLPB202133.210198

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Irradiation damage distribution characteristics of DKDP in large-aperture high-energy laser

doi: 10.11884/HPLPB202133.210198

1.
Department of Physics, University of Science and Technology of Beijing, Beijing 100083, China
2.
State Key Laboratory of Crystal Materials, Shandong University, Ji’nan 250100, China
3.
Weifang Medical University, Weifang 261053, China

Received Date: 2021-05-24
Rev Recd Date: 2021-11-10

Available Online: 2021-11-19

Publish Date: 2021-11-15

Abstract

Abstract

To establish the effective evaluation about damage properties of large-aperture and high-energy optic components, we studied the statistics of the surface damage of the DKDP component. We analysed and summarized various kinds of damage distributing in surface of the optic component by step-by-step shooting, merging images and counting damage pits. We investigated correlation distribution of damage types and irradiation conditions using statistics of surface damage data, theoretical calculation and demonstration of similar experiment. It is found that positions of damage pits are closely relevant to distribution of energy density of laser beam (3ω). When the energy density exceeds 6.7 J/cm², the distribution of energy density of the laser beam can be Gaussian. On the contrary, when energy density is less than 6.7 J/cm², the distribution of energy density of the laser beam can be uniform. Our study could provide a valuable reference for evaluating characteristics of damage to optical component working under irradiation in large-aperture high-energy laser. It is also reterable in operating and maintaining large-aperture high-energy laser facility.
- DKDP,
- laser induced damage,
- distribution,
- large-aperture,
- high-energy laser

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References(32)

References

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