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Article

Silica-Based Sol-Gel Coating with High Transmission at 1053 and 527 nm and Absorption at 351 nm for Frequency-Converting Crystals in High-Power Laser System

1
Research Center of Laser Fusion, China Academy of Engineering Physics, No. 64 Mianshan Road, Mianyang 621900, China
2
School of Materials and Energy, University of Electronic Science and Technology of China, No.4 2nd Jianshebei Road, Chengdu 610054, China
3
College of Materials Science and Engineering, Sichuan University, No.24 1st Ring Road South, Chengdu 610041, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(23), 5038; https://doi.org/10.3390/app9235038
Received: 29 October 2019 / Revised: 12 November 2019 / Accepted: 21 November 2019 / Published: 22 November 2019
(This article belongs to the Collection Optical Design and Engineering)
A high-power laser system is employed to drive the fusion ignition to realize sustainable supply of green energy according to the inertial confinement fusion theory, in which frequency-converting crystals are sealed in the terminal vacuum chamber and utilized to turn the incident laser (1053 nm) to the desired one (351 nm). However, the reflected 351 nm laser from the pellet hohlraum that goes back through the frequency-converting crystal is found to be harmful for the upstream elements that are located before the terminal chamber. In this study, a specialized coating system for the frequency-converting crystals was designed and fabricated to both ensure high output power for the fusion and reduce the reflected 351 nm laser energy by absorption. Furthermore, the structural, mechanical, and laser-damage resistant properties of this coating were investigated as well. View Full-Text
Keywords: high-power laser system; frequency-converting crystal coating; reflected 351 nm laser high-power laser system; frequency-converting crystal coating; reflected 351 nm laser
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MDPI and ACS Style

Deng, X.-R.; Yang, W.; Hui, H.-H.; Zhang, Q.-H.; Xu, Q.; Chen, J.-J.; Zhu, J.-L.; Lei, X.-Y. Silica-Based Sol-Gel Coating with High Transmission at 1053 and 527 nm and Absorption at 351 nm for Frequency-Converting Crystals in High-Power Laser System. Appl. Sci. 2019, 9, 5038. https://doi.org/10.3390/app9235038

AMA Style

Deng X-R, Yang W, Hui H-H, Zhang Q-H, Xu Q, Chen J-J, Zhu J-L, Lei X-Y. Silica-Based Sol-Gel Coating with High Transmission at 1053 and 527 nm and Absorption at 351 nm for Frequency-Converting Crystals in High-Power Laser System. Applied Sciences. 2019; 9(23):5038. https://doi.org/10.3390/app9235038

Chicago/Turabian Style

Deng, Xue-Ran, Wei Yang, Hao-Hao Hui, Qing-Hua Zhang, Qiao Xu, Jin-Ju Chen, Ji-Liang Zhu, and Xiang-Yang Lei. 2019. "Silica-Based Sol-Gel Coating with High Transmission at 1053 and 527 nm and Absorption at 351 nm for Frequency-Converting Crystals in High-Power Laser System" Applied Sciences 9, no. 23: 5038. https://doi.org/10.3390/app9235038

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