{"id":5213,"date":"2024-02-22T11:11:53","date_gmt":"2024-02-22T10:11:53","guid":{"rendered":"https:\/\/www.cailabs.com\/case-studies\/canunda-axicon-generates-nanoscale-surface-structuring-using-a-bessel-beam\/"},"modified":"2025-03-24T10:02:06","modified_gmt":"2025-03-24T09:02:06","slug":"canunda-axicon-generates-nanoscale-surface-structuring-using-a-bessel-beam","status":"publish","type":"case-study","link":"https:\/\/www.cailabs.com\/fr\/etudes-de-cas\/micro-usinage\/canunda-axicon-generates-nanoscale-surface-structuring-using-a-bessel-beam\/","title":{"rendered":"CANUNDA-AXICON permet une structuration de surface \u00e0 l\u2019\u00e9chelle nanom\u00e9trique"},"content":{"rendered":"\n
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<\/span>
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Per\u00e7age de rainures en cuivre…<\/strong><\/strong><\/h6>\n\n\n\n
\"Picture2\"<\/picture><\/figure>
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> Cuivre<\/p>\n\n\n\n

> 323nm<\/p>\n\n\n\n

> 6\u00b5J \/ impulsion<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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\u2026 avec un faisceau de Bessel r\u00e9flective<\/strong><\/strong><\/h6>\n\n\n\n
\"\u2022\t400:1<\/picture><\/figure>
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Dans le plan de process :<\/em><\/p>\n\n\n\n

> 400:1 rapport longueur-largeur
> 0.51 \u00b5m FWHM
> Pas d\u2019oscillations sur l\u2019axe de propagation<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

Profile Bessel x2<\/strong> plus proche du profil th\u00e9orique<\/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

Fraunhofer Institute for Laser Technologies (ITL)<\/a> est un institut de recherche allemand ayant pour objectif le transfert de la technologie laser vers l\u2019industrie, notamment avec le d\u00e9veloppement de nouvelles sources laser et composants photoniques pour divers proc\u00e9d\u00e9s comme la d\u00e9coupe, le traitement de surface, la micro-fabrication, etc.<\/p>\n\n\n\n

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

La structuration de surface<\/strong> permet de modifier les propri\u00e9t\u00e9s d\u2019une surface en gravant sur celle-ci une texture \u00e0 l\u2019\u00e9chelle microm\u00e9trique ou nanom\u00e9trique. Gr\u00e2ce \u00e0 une profondeur de champs largement sup\u00e9rieur \u00e0 un faisceau Gaussien classique, l\u2019utilisation d\u2019un faisceau de Bessel<\/strong> est particuli\u00e8rement int\u00e9ressante pour la structuration de surfaces rugueuses et irr\u00e9guli\u00e8res ou lorsque la pr\u00e9cision machine est faible.<\/p>\n\n\n\n

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

Les faisceaux de Bessel permettent d\u2019atteindre des profondeurs de champ de l\u2019ordre du millim\u00e8tre avec un diam\u00e8tre de spot inf\u00e9rieur \u00e0 1 \u00b5m et sont g\u00e9n\u00e9ralement g\u00e9n\u00e9r\u00e9s gr\u00e2ce \u00e0 des axicons. Cependant les axicons conventionnels pr\u00e9sentent des d\u00e9fauts de fabrication, notamment au niveau de la pointe, qui causent des oscillations du profil d\u2019intensit\u00e9 sur l\u2019axe de propagation et limitent la qualit\u00e9 ainsi que la stabilit\u00e9 du proc\u00e9d\u00e9.<\/strong><\/p>\n\n\n\n

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

CANUNDA-AXICON permet de g\u00e9n\u00e9rer un faisceau de Bessel sans oscillations et avec une profondeur de champ optimale. Gr\u00e2ce \u00e0 son design purement r\u00e9flectif, par opposition au design r\u00e9fractif des axicons classiques, les propri\u00e9t\u00e9s du faisceau sont am\u00e9lior\u00e9es : pas de dispersion chromatique, dur\u00e9e des impulsions laser pr\u00e9serv\u00e9e. Facilement int\u00e9grable dans un environnement industriel, il g\u00e8re avec stabilit\u00e9 les impulsions laser ultra-courtes \u00e0 haute \u00e9nergie.<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"

Fraunhofer ILT, Allemagne<\/p>\n","protected":false},"author":2,"featured_media":1027,"parent":0,"template":"","categorie-case-study":[87,84],"class_list":["post-5213","case-study","type-case-study","status-publish","has-post-thumbnail","hentry","categorie-case-study-micro-usinage","categorie-case-study-procedes-laser-industriels"],"acf":[],"yoast_head":"\nEtude de cas | CANUNDA-AXICON permet une structuration de surface \u00e0 l\u2019\u00e9chelle nanom\u00e9trique<\/title>\n<meta name=\"description\" content=\"CANUNDA-AXICON permet une structuration de surface \u00e0 l\u2019\u00e9chelle nanom\u00e9trique\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cailabs.com\/fr\/etudes-de-cas\/micro-usinage\/canunda-axicon-generates-nanoscale-surface-structuring-using-a-bessel-beam\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" 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