{"id":4883,"date":"2024-02-05T17:54:46","date_gmt":"2024-02-05T16:54:46","guid":{"rendered":"https:\/\/www.cailabs.com\/case-studies\/fraunhofer-ilt-germany\/"},"modified":"2025-03-24T10:02:07","modified_gmt":"2025-03-24T09:02:07","slug":"coherent-usa","status":"publish","type":"case-study","link":"https:\/\/www.cailabs.com\/fr\/etudes-de-cas\/micro-usinage\/coherent-usa\/","title":{"rendered":"COHERENT am\u00e9liore la d\u00e9coupe du verre avec coating gr\u00e2ce \u00e0 CANUNDA-AXICON Z-FLAT"},"content":{"rendered":"\n
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Per\u00e7age de trous carr\u00e9s<\/strong><\/strong><\/strong> \u2026<\/strong><\/strong><\/h6>\n\n\n\n
\"Image<\/picture><\/figure>
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> Verre de type Gorilla<\/p>\n\n\n\n

> 1030nm<\/p>\n\n\n\n

> HR coating<\/p>\n\n\n\n

> Verre de 1mm<\/p>\n\n\n\n

> 30\u00b5m coating<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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\u2026 avec un faisceau de Bessel homog\u00e8ne sur l’axe de propagation<\/strong><\/strong><\/strong><\/h6>\n\n\n\n
\"Picture10\"<\/picture><\/figure>
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Dans le plan de process :
> 25\u00b5m FWHM<\/em>
> 300mm longueur<\/em><\/em>
> Dur\u00e9e de la transition<\/em> \/3<\/em>
> Homog\u00e9n\u00e9it\u00e9<\/em> x1.5<\/em>
> +50% d\u2019\u00e9nergie utile<\/em><\/em><\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

Largeur du coating ablat\u00e9 -20%<\/strong><\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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T\u00e9l\u00e9chargez l’\u00e9tude de cas<\/a><\/div>\n<\/div>\n\n\n\n
Le partenaire<\/h5>\n\n\n\n

COHERENT<\/a> est une entreprise am\u00e9ricaine leader sur le march\u00e9 mondial des produits photoniques. En tant que fabricante de technologies bas\u00e9es sur le laser \u00e0 destination de clients scientifiques, commerciaux et industriels, l\u2019entreprise fournit des solutions destin\u00e9es \u00e0 de nombreuses applications.<\/p>\n\n\n\n

L\u2019application<\/h5>\n\n\n\n

L\u2019ablation de couches minces consiste en l\u2019ablation s\u00e9lective d\u2019une ou plusieurs \u00e9paisseurs d\u2019une pi\u00e8ce compos\u00e9e de plusieurs couches multi-mat\u00e9riaux. Ce proc\u00e9d\u00e9 est g\u00e9n\u00e9ralement r\u00e9alis\u00e9 par des lasers ultra-courts, typiquement femtoseconde<\/p>\n\n\n\n

La probl\u00e9matique<\/h5>\n\n\n\n

Les clients dont le verre est rev\u00eatu souhaitent que leur verre soit d\u00e9coup\u00e9 id\u00e9alement sans que le rev\u00eatement soit enlev\u00e9 le long du bord, ou avec une largeur minimale. Si le rev\u00eatement n\u2019est pas transparent au laser, la filamentation ne fonctionnera pas. La m\u00e9thode utilis\u00e9e par Coherent consiste \u00e0 placer l\u2019\u00e9chantillon face rev\u00eatue vers le bas et \u00e0 effectuer la filamentation \u00e0 travers la face transparente non rev\u00eatue. L\u2019avantage est qu\u2019il s\u2019agit d\u2019un processus en une seule \u00e9tape, mais le probl\u00e8me est que le faisceau laser de filamentation va ablater et endommager le rev\u00eatement sur la face inf\u00e9rieure.<\/p>\n\n\n\n

La solution CANUNDA-AXICON Z-FLAT<\/h5>\n\n\n\n

CANUNDA-AXICON Z-FLAT est un module de mise en forme permettant de g\u00e9n\u00e9rer un faisceau de Bessel sur mesure<\/strong>. Bas\u00e9 sur la technologie d\u2019axicon r\u00e9flectif<\/strong> d\u00e9velopp\u00e9e par Cailabs, il g\u00e8re avec stabilit\u00e9 et robustesse les impulsions laser femtoseconde \u00e0 haute \u00e9nergie<\/strong> en \u00e9vitant les ph\u00e9nom\u00e8nes ind\u00e9sirables comme la dispersion, les aberrations chromatiques et la d\u00e9focalisation et en d\u00e9livrant un faisceau de Bessel au profil tr\u00e8s proche de l\u2019id\u00e9al th\u00e9orique pr\u00e9sentant donc peu d\u2019oscillations<\/strong>.<\/p>\n\n\n\n

Les performances-cl\u00e9s de CANUNDA-AXICON Z-FLAT<\/a><\/h5>\n\n\n\n

\u201cChez Coherent, nous nous int\u00e9ressons \u00e0 la mise en forme du faisceau afin d\u2019am\u00e9liorer les performances du proc\u00e9d\u00e9 de traitement du verre. Avec le module Z-FLAT, nous avons r\u00e9ussi \u00e0 r\u00e9duire la largeur du coating qui \u00e9tait enlev\u00e9 avant d\u00e9coupe du verre, menant ainsi \u00e0 une am\u00e9lioration de la qualit\u00e9 du proc\u00e9d\u00e9.<\/em>\u201d<\/p>\n\n\n\n

Tony Lee,<\/strong><\/p>\n\n\n\n

Ing\u00e9nieur Process, Coherent<\/p>\n\n\n\n

Int\u00e9gration industrielle de CANUNDA-AXICON Z-FLAT<\/h5>\n\n\n\n

Le module CANUNDA-AXICON Z-FLAT a \u00e9t\u00e9 install\u00e9 dans un laboratoire d\u2019application chez Coherent pour permettre l\u2019ablation d\u2019une couche mince d\u2019un coating argent sur du verre de type Gorilla<\/strong>. L\u2019ablation sur une largeur de seulement 22 \u00b5m a \u00e9t\u00e9 possible.<\/p>\n\n\n\n

CANUNDA-AXICON Z-FLAT a g\u00e9n\u00e9r\u00e9 un faisceau de Bessel sur mesure, homog\u00e8ne selon sa direction de propagation. L\u2019angle \u00e9quivalent avec un axicon standard est de 0,25\u00b0<\/strong>. Le faisceau de Bessel g\u00e9n\u00e9r\u00e9 a un diam\u00e8tre de 25 \u00b5m et une longueur de 300 mm<\/strong> \u00e0 mi-hauteur selon la propagation. Dans le plan du proc\u00e9d\u00e9, le diam\u00e8tre est de 1,2 \u00b5m et la longueur de 0,8 mm.<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"

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