Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etching
Mechanical cracks induced during grinding of brittle materials known as subsurface damage (SSD) reduce mechanical and optical properties of optical components. A characterisation of SSD is needed to guarantee a good quality and to optimize individual processes and processing chains. Current research...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/19/epjconf_eosam2024_03010.pdf |
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| author | Frank Samson Zhang Wei Thelemann Dennis Elies Oliver Arnold Thomas Bliedtner Jens |
| author_facet | Frank Samson Zhang Wei Thelemann Dennis Elies Oliver Arnold Thomas Bliedtner Jens |
| author_sort | Frank Samson |
| collection | DOAJ |
| description | Mechanical cracks induced during grinding of brittle materials known as subsurface damage (SSD) reduce mechanical and optical properties of optical components. A characterisation of SSD is needed to guarantee a good quality and to optimize individual processes and processing chains. Current research focuses on non-destructive methods such as optical coherence tomography (OCT) to evaluate SSD depth and distribution and to replace currently established, but time-consuming and labour-intensive destructive methods. Yet the imaging of SSD remains challenging, even with high-resolution OCT providing a high sensitivity. The presented work proposes a combined measurement approach of enhanced SSD imaging by using a potassium hydroxide (KOH) wet etching process prior to OCT measurement. An etching process using 30% KOH at 80°C is applied and resulting etching rates are analysed. It is shown by an iterative etching experiment on optical glass SF6 that the KOH etching process enhances OCT signals of SSD under the surface, revealing up to 2.4-times deeper maximum SSD depths using an identical measurement setup. |
| format | Article |
| id | doaj-art-bc66381dad6244ca85d7398802a081fc |
| institution | OA Journals |
| issn | 2100-014X |
| language | English |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-bc66381dad6244ca85d7398802a081fc2025-08-20T02:12:55ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013090301010.1051/epjconf/202430903010epjconf_eosam2024_03010Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etchingFrank Samson0Zhang Wei1Thelemann Dennis2Elies Oliver3Arnold Thomas4Bliedtner Jens5Ernst-Abbe-Hochschule Jena University of Applied Sciences, Faculty of SciTecErnst-Abbe-Hochschule Jena University of Applied Sciences, Faculty of SciTecErnst-Abbe-Hochschule Jena University of Applied Sciences, Faculty of SciTecErnst-Abbe-Hochschule Jena University of Applied Sciences, Faculty of SciTecLeibniz Institute of Surface Engineering (IOM)Ernst-Abbe-Hochschule Jena University of Applied Sciences, Faculty of SciTecMechanical cracks induced during grinding of brittle materials known as subsurface damage (SSD) reduce mechanical and optical properties of optical components. A characterisation of SSD is needed to guarantee a good quality and to optimize individual processes and processing chains. Current research focuses on non-destructive methods such as optical coherence tomography (OCT) to evaluate SSD depth and distribution and to replace currently established, but time-consuming and labour-intensive destructive methods. Yet the imaging of SSD remains challenging, even with high-resolution OCT providing a high sensitivity. The presented work proposes a combined measurement approach of enhanced SSD imaging by using a potassium hydroxide (KOH) wet etching process prior to OCT measurement. An etching process using 30% KOH at 80°C is applied and resulting etching rates are analysed. It is shown by an iterative etching experiment on optical glass SF6 that the KOH etching process enhances OCT signals of SSD under the surface, revealing up to 2.4-times deeper maximum SSD depths using an identical measurement setup.https://www.epj-conferences.org/articles/epjconf/pdf/2024/19/epjconf_eosam2024_03010.pdf |
| spellingShingle | Frank Samson Zhang Wei Thelemann Dennis Elies Oliver Arnold Thomas Bliedtner Jens Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etching EPJ Web of Conferences |
| title | Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etching |
| title_full | Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etching |
| title_fullStr | Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etching |
| title_full_unstemmed | Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etching |
| title_short | Enhanced imaging of Subsurface Damage in optical glass SF6 with Optical Coherence Tomography using KOH wet etching |
| title_sort | enhanced imaging of subsurface damage in optical glass sf6 with optical coherence tomography using koh wet etching |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/19/epjconf_eosam2024_03010.pdf |
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