Femtosecond Laser Engraving of Deep Patterns in Steel and Sapphire
Femtosecond laser engraving offers appealing advantages compared to regular laser engraving such as higher precision and versatility. In particular, the inscription of deep patterns exhibits an increasing interest in industry. In this work, an optimization protocol based on constraining overlap rati...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/12/7/804 |
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| author | David Pallarés-Aldeiturriaga Pierre Claudel Julien Granier Julien Travers Lionel Guillermin Marc-Olivier Flaissier Patrick Beaure d’Augeres Xxx Sedao |
| author_facet | David Pallarés-Aldeiturriaga Pierre Claudel Julien Granier Julien Travers Lionel Guillermin Marc-Olivier Flaissier Patrick Beaure d’Augeres Xxx Sedao |
| author_sort | David Pallarés-Aldeiturriaga |
| collection | DOAJ |
| description | Femtosecond laser engraving offers appealing advantages compared to regular laser engraving such as higher precision and versatility. In particular, the inscription of deep patterns exhibits an increasing interest in industry. In this work, an optimization protocol based on constraining overlap ratio and scan number is demonstrated. The proposed method allows changing overlap ratio while maintaining depth in the same range, which reduces the sampling number. This study WAS applied to stainless steel 316 L and sapphire for engravings deeper than 100 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m. Results exhibit overall depths higher than threshold values and allowed to determine optimized engraving quality, for instance, roughness in steel can be reduced while maintaining depth and taper angle by reducing overlap ratio. The optimized laser parameters such as roughness and taper angle factors for sapphire were also found to be as follows: 200 kHz, 86% overlap and 12 J/cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula>. As a demonstration, a logo engraving is illustrated at the end. |
| first_indexed | 2024-03-10T09:31:09Z |
| format | Article |
| id | doaj.art-12fe902da9a14b87bb48ac43697ff391 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T09:31:09Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-12fe902da9a14b87bb48ac43697ff3912023-11-22T04:24:48ZengMDPI AGMicromachines2072-666X2021-07-0112780410.3390/mi12070804Femtosecond Laser Engraving of Deep Patterns in Steel and SapphireDavid Pallarés-Aldeiturriaga0Pierre Claudel1Julien Granier2Julien Travers3Lionel Guillermin4Marc-Olivier Flaissier5Patrick Beaure d’Augeres6Xxx Sedao7Hubert Curien Laboratory, University of Lyon, Jean Monnet University, UMR 5516 CNRS, F-42000 Saint-Etienne, FranceGIE Manutech-USD, 42000 Saint-Etienne, FranceGIE Manutech-USD, 42000 Saint-Etienne, FranceGravotech Marking, 466 Rue des Mercières, 69140 Rillieux-la-Pape, FranceGravotech Marking, 466 Rue des Mercières, 69140 Rillieux-la-Pape, FranceFibercryst S.A.S., 31 rue Wilson, 69150 Decines Charpieu, FranceFibercryst S.A.S., 31 rue Wilson, 69150 Decines Charpieu, FranceHubert Curien Laboratory, University of Lyon, Jean Monnet University, UMR 5516 CNRS, F-42000 Saint-Etienne, FranceFemtosecond laser engraving offers appealing advantages compared to regular laser engraving such as higher precision and versatility. In particular, the inscription of deep patterns exhibits an increasing interest in industry. In this work, an optimization protocol based on constraining overlap ratio and scan number is demonstrated. The proposed method allows changing overlap ratio while maintaining depth in the same range, which reduces the sampling number. This study WAS applied to stainless steel 316 L and sapphire for engravings deeper than 100 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m. Results exhibit overall depths higher than threshold values and allowed to determine optimized engraving quality, for instance, roughness in steel can be reduced while maintaining depth and taper angle by reducing overlap ratio. The optimized laser parameters such as roughness and taper angle factors for sapphire were also found to be as follows: 200 kHz, 86% overlap and 12 J/cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula>. As a demonstration, a logo engraving is illustrated at the end.https://www.mdpi.com/2072-666X/12/7/804raster scanningsteelsapphirelaser engravingfemtosecond laser |
| spellingShingle | David Pallarés-Aldeiturriaga Pierre Claudel Julien Granier Julien Travers Lionel Guillermin Marc-Olivier Flaissier Patrick Beaure d’Augeres Xxx Sedao Femtosecond Laser Engraving of Deep Patterns in Steel and Sapphire Micromachines raster scanning steel sapphire laser engraving femtosecond laser |
| title | Femtosecond Laser Engraving of Deep Patterns in Steel and Sapphire |
| title_full | Femtosecond Laser Engraving of Deep Patterns in Steel and Sapphire |
| title_fullStr | Femtosecond Laser Engraving of Deep Patterns in Steel and Sapphire |
| title_full_unstemmed | Femtosecond Laser Engraving of Deep Patterns in Steel and Sapphire |
| title_short | Femtosecond Laser Engraving of Deep Patterns in Steel and Sapphire |
| title_sort | femtosecond laser engraving of deep patterns in steel and sapphire |
| topic | raster scanning steel sapphire laser engraving femtosecond laser |
| url | https://www.mdpi.com/2072-666X/12/7/804 |
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