Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low flux
Abstract The purpose of this study is to analyze the damage of antireflective (AR) coating over potassium dihydrogen phosphate (KDP) crystal subjected to multi-pulse laser irradiation at low flux under vacuum. Fresh silica AR was characterized as a reference; Atomic Force Microscope (AFM), Scanning...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-25168-4 |
| _version_ | 1797864745065250816 |
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| author | Teng-Hui You Wei Yang Hao-Hao Hui Xiang-Yang Lei Tian-Yu Wang Qing-Hua Zhang Xin Ju Xue-Ran Deng |
| author_facet | Teng-Hui You Wei Yang Hao-Hao Hui Xiang-Yang Lei Tian-Yu Wang Qing-Hua Zhang Xin Ju Xue-Ran Deng |
| author_sort | Teng-Hui You |
| collection | DOAJ |
| description | Abstract The purpose of this study is to analyze the damage of antireflective (AR) coating over potassium dihydrogen phosphate (KDP) crystal subjected to multi-pulse laser irradiation at low flux under vacuum. Fresh silica AR was characterized as a reference; Atomic Force Microscope (AFM), Scanning Electron Microscopy (SEM), profilometer, and Scanning Near-Field Optical Microscope Photo-induced Force Microscope (SNOM-PiFM) were employed to analyze the characteristics of coatings. The experimental results indicated that the damage of AR coating over the KDP crystal was mainly caused by partial exfoliation, which exposed silica particles beneath the surface. It was found that the accumulated tensile stress led to coating damage with the increase of laser pulse. The initial coating damage was observed to extend and interconnect to form large-area exfoliation. Splitting mechanism of SiO–Si TO3 was observed at vibration mode peaks of 1064 cm−1 and 1096 cm−1showing progressing irradiation damage. Based on this study, it would be helpful to suppress the damage probability of AR coating over KDP crystal applied in high-power laser systems. Moreover, the applicability of SNOM-PiFM method to study the Infrared Radiation (IR) spectra of ultra-thin coatings with transparent substrates was proposed. |
| first_indexed | 2024-04-09T22:58:10Z |
| format | Article |
| id | doaj.art-380483c5a41f4ae5b53ac5d6c30bf13e |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T22:58:10Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-380483c5a41f4ae5b53ac5d6c30bf13e2023-03-22T11:09:37ZengNature PortfolioScientific Reports2045-23222023-03-0113111110.1038/s41598-022-25168-4Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low fluxTeng-Hui You0Wei Yang1Hao-Hao Hui2Xiang-Yang Lei3Tian-Yu Wang4Qing-Hua Zhang5Xin Ju6Xue-Ran Deng7Department of Physics, University of Science and Technology BeijingResearch Center of Laser Fusion, China Academy of Engineering PhysicsResearch Center of Laser Fusion, China Academy of Engineering PhysicsResearch Center of Laser Fusion, China Academy of Engineering PhysicsResearch Center of Laser Fusion, China Academy of Engineering PhysicsResearch Center of Laser Fusion, China Academy of Engineering PhysicsDepartment of Physics, University of Science and Technology BeijingResearch Center of Laser Fusion, China Academy of Engineering PhysicsAbstract The purpose of this study is to analyze the damage of antireflective (AR) coating over potassium dihydrogen phosphate (KDP) crystal subjected to multi-pulse laser irradiation at low flux under vacuum. Fresh silica AR was characterized as a reference; Atomic Force Microscope (AFM), Scanning Electron Microscopy (SEM), profilometer, and Scanning Near-Field Optical Microscope Photo-induced Force Microscope (SNOM-PiFM) were employed to analyze the characteristics of coatings. The experimental results indicated that the damage of AR coating over the KDP crystal was mainly caused by partial exfoliation, which exposed silica particles beneath the surface. It was found that the accumulated tensile stress led to coating damage with the increase of laser pulse. The initial coating damage was observed to extend and interconnect to form large-area exfoliation. Splitting mechanism of SiO–Si TO3 was observed at vibration mode peaks of 1064 cm−1 and 1096 cm−1showing progressing irradiation damage. Based on this study, it would be helpful to suppress the damage probability of AR coating over KDP crystal applied in high-power laser systems. Moreover, the applicability of SNOM-PiFM method to study the Infrared Radiation (IR) spectra of ultra-thin coatings with transparent substrates was proposed.https://doi.org/10.1038/s41598-022-25168-4 |
| spellingShingle | Teng-Hui You Wei Yang Hao-Hao Hui Xiang-Yang Lei Tian-Yu Wang Qing-Hua Zhang Xin Ju Xue-Ran Deng Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low flux Scientific Reports |
| title | Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low flux |
| title_full | Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low flux |
| title_fullStr | Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low flux |
| title_full_unstemmed | Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low flux |
| title_short | Damage analysis and mechanism study of sol–gel coating over KDP crystal under multi-pulse of laser irradiation at low flux |
| title_sort | damage analysis and mechanism study of sol gel coating over kdp crystal under multi pulse of laser irradiation at low flux |
| url | https://doi.org/10.1038/s41598-022-25168-4 |
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