{"id":9236,"date":"2022-08-05T01:02:57","date_gmt":"2022-08-05T01:02:57","guid":{"rendered":"https:\/\/hispeedlaser.com\/?p=9236"},"modified":"2024-12-19T03:32:55","modified_gmt":"2024-12-19T03:32:55","slug":"quest-ce-quune-source-laser-a-fibre","status":"publish","type":"post","link":"https:\/\/hispeedlaser.com\/fr\/blog\/what-is-fiber-laser-source\/","title":{"rendered":"Qu'est-ce qu'une source laser \u00e0 fibre optique ?"},"content":{"rendered":"<p>Lorsque nous parlons de machines de nettoyage au laser ou de machines de d\u00e9rouillage, nous faisons principalement r\u00e9f\u00e9rence \u00e0 l'\u00e9l\u00e9ment le plus important de ces machines : la source laser \u00e0 fibre.<\/p>\n<div class=\"container section-title-container\" ><h2 class=\"section-title section-title-normal\"><b aria-hidden=\"true\"><\/b><span class=\"section-title-main\" >Types de sources laser \u00e0 fibre<\/span><b aria-hidden=\"true\"><\/b><\/h2><\/div>\n<p>Les g\u00e9n\u00e9rateurs laser comprennent les lasers \u00e0 onde continue (lasers CW) et les lasers puls\u00e9s.<\/p>\n<p>Comme son nom l'indique, le rayonnement d'un laser \u00e0 onde continue est continu dans le temps. La source de pompage du laser fournit en effet de l'\u00e9nergie en continu afin de g\u00e9n\u00e9rer un rayonnement laser pendant une longue dur\u00e9e, ce qui permet d'obtenir un laser \u00e0 onde continue. La puissance de sortie des lasers \u00e0 onde continue est g\u00e9n\u00e9ralement relativement faible, ce qui convient aux applications n\u00e9cessitant l'utilisation de lasers \u00e0 onde constante.<\/p>\n<p>Un laser puls\u00e9 ne fonctionne qu'une seule fois au cours d'un intervalle de temps donn\u00e9. La puissance de sortie du laser puls\u00e9 est \u00e9lev\u00e9e, ce qui le rend adapt\u00e9 au marquage, \u00e0 la d\u00e9coupe, au soudage, au nettoyage, \u00e0 la t\u00e9l\u00e9m\u00e9trie, etc.<\/p>\n<p>En ce qui concerne leur principe de fonctionnement, ils appartiennent tous \u00e0 la cat\u00e9gorie des lasers \u00e0 impulsions. Cependant, la fr\u00e9quence des impulsions laser \u00e9mises par le laser \u00e0 onde continue est relativement \u00e9lev\u00e9e, ce qui la rend imperceptible \u00e0 l'\u0153il nu.<\/p>\n<p>Le principe du nettoyage par faisceau laser consiste \u00e0 exploiter la forte densit\u00e9 d'\u00e9nergie du laser pour d\u00e9truire les polluants adh\u00e9rant \u00e0 la surface du substrat sans endommager ce dernier.<\/p>\n<p>En fonction de l'analyse des propri\u00e9t\u00e9s optiques du substrat \u00e0 nettoyer et des contaminants, le m\u00e9canisme de nettoyage au laser peut \u00eatre class\u00e9 en deux cat\u00e9gories :<\/p>\n<p>L'une d'elles consiste \u00e0 exploiter la diff\u00e9rence de taux d'absorption de l'\u00e9nergie laser d'une certaine longueur d'onde entre les polluants et le substrat, de sorte que l'\u00e9nergie laser soit enti\u00e8rement absorb\u00e9e par les polluants, ce qui provoque leur \u00e9chauffement et entra\u00eene leur dilatation ou leur vaporisation.<\/p>\n<p>D'autre part, il y a peu de diff\u00e9rence entre le substrat et les impuret\u00e9s en termes de capacit\u00e9 d'absorption du laser. Un laser puls\u00e9 \u00e0 haute fr\u00e9quence et haute puissance est utilis\u00e9 pour frapper la surface de l'objet ; l'onde de choc fait \u00e9clater les impuret\u00e9s et les s\u00e9pare de la surface du substrat.<\/p>\n<p>Dans le domaine du nettoyage au faisceau laser, les lasers \u00e0 fibre sont d\u00e9sormais le choix privil\u00e9gi\u00e9 en mati\u00e8re de sources lumineuses, gr\u00e2ce \u00e0 leur grande fiabilit\u00e9, leur stabilit\u00e9 et leur flexibilit\u00e9.<\/p>\n<p>En tant que deux composantes principales des lasers \u00e0 fibre, les lasers \u00e0 fibre en mode continu et les lasers \u00e0 fibre puls\u00e9s occupent respectivement une place pr\u00e9pond\u00e9rante dans l'usinage macroscopique et l'usinage de pr\u00e9cision des mat\u00e9riaux.<\/p>\n<p>L'\u00e9limination de la rouille, de la peinture, de l'huile et de la couche d'oxyde sur les surfaces m\u00e9talliques constitue le domaine d'application le plus r\u00e9pandu du nettoyage au laser.<\/p>\n<div class=\"video video-fit mb\" style=\"padding-top:56.25%;\"><p><iframe title=\"Machine de nettoyage au laser Hispeed Laser New Style 1000 W\" width=\"1020\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/VL6TraugsXw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Lorsque nous parlons de machines de nettoyage au laser ou de machines de d\u00e9rouillage, nous faisons principalement r\u00e9f\u00e9rence \u00e0 l'\u00e9l\u00e9ment le plus important de ces machines : la source laser \u00e0 fibre. Les g\u00e9n\u00e9rateurs laser comprennent les lasers \u00e0 onde continue (lasers CW) et les lasers puls\u00e9s. Comme leur nom l'indique, la sortie d'un laser \u00e0 onde continue est continue dans le temps. Et le laser\u2026<\/p>","protected":false},"author":9,"featured_media":9237,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-9236","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fiber Laser Source: Everything You Need to Know<\/title>\n<meta name=\"description\" content=\"Fiber lasers are the core component in laser cleaning machines. 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