Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning

Low-pressure plasma cleaning technology is currently regarded as a highly promising method for the effective in-situ removal of surface contaminants from large-aperture optical components (LAOC) (⩾430 mm) in laser fusion facilities. After a long cleaning, irreversible damage can occur to the sol-gel...

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Main Authors: Rongqi Shen, Yuhai Li, Zixu Wang, Laixi Sun, Xiaodong Yuan, Xiang Dong, Xia Xiang, Bo Li, Xujie Liu, Xueshi Xu, Tingting Wang, Qingshun Bai
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:Nuclear Fusion
Subjects:
Online Access:https://doi.org/10.1088/1741-4326/adaed2
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author Rongqi Shen
Yuhai Li
Zixu Wang
Laixi Sun
Xiaodong Yuan
Xiang Dong
Xia Xiang
Bo Li
Xujie Liu
Xueshi Xu
Tingting Wang
Qingshun Bai
author_facet Rongqi Shen
Yuhai Li
Zixu Wang
Laixi Sun
Xiaodong Yuan
Xiang Dong
Xia Xiang
Bo Li
Xujie Liu
Xueshi Xu
Tingting Wang
Qingshun Bai
author_sort Rongqi Shen
collection DOAJ
description Low-pressure plasma cleaning technology is currently regarded as a highly promising method for the effective in-situ removal of surface contaminants from large-aperture optical components (LAOC) (⩾430 mm) in laser fusion facilities. After a long cleaning, irreversible damage can occur to the sol-gel antireflective (AR) coatings on the surface of the LAOCs. Hence, a study was conducted to analyze the surface damage characteristics of low-pressure plasma cleaning on optical components and implement in-situ plasma cleaning techniques in the laser fusion facility. Initially, the impact of organic contaminant levels on the performance of optical components was assessed by experiments. Subsequently, the correlation between plasma cleaning duration, transmittance, wavelength peak, and laser-induced damage threshold of sol-gel antireflection coating on the LAOCs was examined. Experimental findings from plasma cleaning trials revealed that prolonged plasma exposure had a cumulative detrimental influence on coating thickness and optical performance, gradually increasing surface pores. Ultimately, investigating the surface damage mechanism of sol-gel AR coatings during low-pressure plasma cleaning establishes a groundwork for achieving non-destructive in-situ cleaning of LAOCs in laser fusion facilities.
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institution Kabale University
issn 0029-5515
language English
publishDate 2025-01-01
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series Nuclear Fusion
spelling doaj-art-eb779b54f7a248e19255a306c9505bfe2025-02-07T09:02:14ZengIOP PublishingNuclear Fusion0029-55152025-01-0165303600210.1088/1741-4326/adaed2Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaningRongqi Shen0https://orcid.org/0000-0002-4785-0622Yuhai Li1https://orcid.org/0000-0001-5427-876XZixu Wang2Laixi Sun3Xiaodong Yuan4Xiang Dong5Xia Xiang6https://orcid.org/0000-0002-4042-1016Bo Li7Xujie Liu8Xueshi Xu9Tingting Wang10Qingshun Bai11https://orcid.org/0000-0002-8626-4431School of Mechanical and Electronic Engineering, Nanjing Forestry University , Nanjing 210042, ChinaLaser Fusion Research Center, China Academy of Engineering Physics , Mianyang 621900, ChinaInstitute of General Engineering , China Academy of Engineering Physics, Mianyang 621999, ChinaLaser Fusion Research Center, China Academy of Engineering Physics , Mianyang 621900, ChinaLaser Fusion Research Center, China Academy of Engineering Physics , Mianyang 621900, ChinaSchool of Physics, University of Electronic Science and Technology of China , Chengdu 610054, ChinaSchool of Physics, University of Electronic Science and Technology of China , Chengdu 610054, ChinaSchool of Physics, University of Electronic Science and Technology of China , Chengdu 610054, ChinaSchool of Mechatronics Engineering, Harbin Institute of Technology , Harbin 150000, ChinaSchool of Mechatronics Engineering, Harbin Institute of Technology , Harbin 150000, ChinaSchool of Mechatronics Engineering, Harbin Institute of Technology , Harbin 150000, ChinaSchool of Mechatronics Engineering, Harbin Institute of Technology , Harbin 150000, ChinaLow-pressure plasma cleaning technology is currently regarded as a highly promising method for the effective in-situ removal of surface contaminants from large-aperture optical components (LAOC) (⩾430 mm) in laser fusion facilities. After a long cleaning, irreversible damage can occur to the sol-gel antireflective (AR) coatings on the surface of the LAOCs. Hence, a study was conducted to analyze the surface damage characteristics of low-pressure plasma cleaning on optical components and implement in-situ plasma cleaning techniques in the laser fusion facility. Initially, the impact of organic contaminant levels on the performance of optical components was assessed by experiments. Subsequently, the correlation between plasma cleaning duration, transmittance, wavelength peak, and laser-induced damage threshold of sol-gel antireflection coating on the LAOCs was examined. Experimental findings from plasma cleaning trials revealed that prolonged plasma exposure had a cumulative detrimental influence on coating thickness and optical performance, gradually increasing surface pores. Ultimately, investigating the surface damage mechanism of sol-gel AR coatings during low-pressure plasma cleaning establishes a groundwork for achieving non-destructive in-situ cleaning of LAOCs in laser fusion facilities.https://doi.org/10.1088/1741-4326/adaed2low-pressure plasmalarge-aperture optical componentin-situ cleaningsol-gel antireflective coatingsnano-porosity defects
spellingShingle Rongqi Shen
Yuhai Li
Zixu Wang
Laixi Sun
Xiaodong Yuan
Xiang Dong
Xia Xiang
Bo Li
Xujie Liu
Xueshi Xu
Tingting Wang
Qingshun Bai
Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning
Nuclear Fusion
low-pressure plasma
large-aperture optical component
in-situ cleaning
sol-gel antireflective coatings
nano-porosity defects
title Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning
title_full Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning
title_fullStr Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning
title_full_unstemmed Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning
title_short Experimental study on the damage characteristics of sol-gel antireflection coatings on large-aperture optical components by in-situ plasma cleaning
title_sort experimental study on the damage characteristics of sol gel antireflection coatings on large aperture optical components by in situ plasma cleaning
topic low-pressure plasma
large-aperture optical component
in-situ cleaning
sol-gel antireflective coatings
nano-porosity defects
url https://doi.org/10.1088/1741-4326/adaed2
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