{"id":6175,"date":"2025-10-17T03:49:31","date_gmt":"2025-10-17T03:49:31","guid":{"rendered":"https:\/\/www.free-optic.com\/?p=6175"},"modified":"2025-11-07T06:23:04","modified_gmt":"2025-11-07T06:23:04","slug":"how-to-choose-between-continuous-and-pulsed-fiber-lasers","status":"publish","type":"post","link":"https:\/\/www.free-optic.com\/fr\/news\/how-to-choose-between-continuous-and-pulsed-fiber-lasers\/","title":{"rendered":"Comment choisir entre les lasers \u00e0 fibre continus et puls\u00e9s ?"},"content":{"rendered":"<p>Les lasers \u00e0 fibre repr\u00e9sentent une part croissante des lasers industriels d'ann\u00e9e en ann\u00e9e en raison de leur structure simple, de leur faible co\u00fbt, de leur efficacit\u00e9 de conversion \u00e9lectro-optique \u00e9lev\u00e9e et de leurs bons effets de sortie. Selon les statistiques, les lasers \u00e0 fibre repr\u00e9sentaient 52,7% du march\u00e9 des lasers industriels en 2020.<\/p>\n\n\n\n<p>En fonction des caract\u00e9ristiques du faisceau de sortie, les lasers \u00e0 fibre peuvent \u00eatre divis\u00e9s en deux cat\u00e9gories : les lasers continus et les lasers \u00e0 impulsion. Quelles sont les diff\u00e9rences techniques entre les deux et quels sont les sc\u00e9narios d'application qui conviennent \u00e0 chacune d'entre elles ? Voici une simple comparaison des applications dans des situations g\u00e9n\u00e9rales.<\/p>\n\n\n\n<p>Comme son nom l'indique, la sortie laser d'un laser \u00e0 fibre continu est continue et la puissance est maintenue \u00e0 un niveau fixe. Cette puissance est la puissance nominale du laser. Les lasers \u00e0 fibre continue pr\u00e9sentent l'avantage d'un fonctionnement stable \u00e0 long terme.<\/p>\n\n\n\n<p>Le laser \u00e0 impulsion est \"intermittent\". Bien entendu, ce temps d'intermittence est souvent tr\u00e8s court, g\u00e9n\u00e9ralement mesur\u00e9 en millisecondes, microsecondes, voire nanosecondes et picosecondes. Par rapport au laser continu, l'intensit\u00e9 du laser \u00e0 impulsions varie constamment, d'o\u00f9 les notions de \"cr\u00eate\" et de \"creux\".<\/p>\n\n\n\n<p>Gr\u00e2ce \u00e0 la modulation d'impulsion, le laser puls\u00e9 peut \u00eatre lib\u00e9r\u00e9 rapidement et atteindre une puissance maximale \u00e0 la position de cr\u00eate, mais en raison de l'existence d'un creux, la puissance moyenne est relativement faible. Il est concevable que si la puissance moyenne est la m\u00eame, le pic de puissance du laser \u00e0 impulsions peut \u00eatre beaucoup plus important que celui du laser continu, ce qui permet d'obtenir une densit\u00e9 d'\u00e9nergie sup\u00e9rieure \u00e0 celle du laser continu, ce qui se traduit par une plus grande capacit\u00e9 de p\u00e9n\u00e9tration dans l'usinage des m\u00e9taux. En m\u00eame temps, il convient \u00e9galement aux mat\u00e9riaux sensibles \u00e0 la chaleur qui ne peuvent pas supporter une chaleur \u00e9lev\u00e9e soutenue, ainsi qu'\u00e0 certains mat\u00e9riaux \u00e0 haute r\u00e9flectivit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les caract\u00e9ristiques de puissance de sortie des deux appareils nous permettent d'analyser les diff\u00e9rences d'application.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Les lasers \u00e0 fibre CW conviennent g\u00e9n\u00e9ralement pour :<\/h3>\n\n\n\n<p>1. Transformation de grands \u00e9quipements, tels que les v\u00e9hicules et les machines navales, la d\u00e9coupe et la transformation de grandes plaques d'acier et d'autres op\u00e9rations de transformation qui ne sont pas sensibles aux effets thermiques mais qui sont plus sensibles aux co\u00fbts<\/p>\n\n\n\n<p>2. Utilis\u00e9 pour la coupe chirurgicale et la coagulation dans le domaine m\u00e9dical, comme l'h\u00e9mostase apr\u00e8s une intervention chirurgicale, etc.<\/p>\n\n\n\n<p>3. Largement utilis\u00e9 dans les syst\u00e8mes de communication par fibre optique pour la transmission et l'amplification des signaux, avec une grande stabilit\u00e9 et un faible bruit de phase.<\/p>\n\n\n\n<p>4. Utilis\u00e9 dans des applications telles que l'analyse spectrale, les exp\u00e9riences de physique atomique et le lidar dans le domaine de la recherche scientifique, fournissant une puissance \u00e9lev\u00e9e et une sortie laser de haute qualit\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les lasers \u00e0 fibre puls\u00e9s conviennent g\u00e9n\u00e9ralement pour :<\/h3>\n\n\n\n<p>1. Traitement de pr\u00e9cision des mat\u00e9riaux qui ne peuvent pas supporter de forts effets thermiques ou des mat\u00e9riaux fragiles, tels que le traitement des puces \u00e9lectroniques, du verre c\u00e9ramique et des pi\u00e8ces biologiques m\u00e9dicales.<\/p>\n\n\n\n<p>2. Le mat\u00e9riau a une forte r\u00e9flectivit\u00e9 et peut facilement endommager la t\u00eate laser elle-m\u00eame en raison de la r\u00e9flexion. Par exemple, le traitement des mat\u00e9riaux en cuivre et en aluminium<\/p>\n\n\n\n<p>3. Traitement de surface ou nettoyage de l'ext\u00e9rieur des substrats facilement endommag\u00e9s<\/p>\n\n\n\n<p>4. Les situations de traitement qui n\u00e9cessitent une puissance \u00e9lev\u00e9e \u00e0 court terme et une p\u00e9n\u00e9tration profonde, telles que la d\u00e9coupe de plaques \u00e9paisses, le per\u00e7age de mat\u00e9riaux m\u00e9talliques, etc.<\/p>\n\n\n\n<p>5. Situations dans lesquelles les impulsions doivent \u00eatre utilis\u00e9es comme caract\u00e9ristiques du signal. Telles que les communications par fibre optique et les capteurs \u00e0 fibre optique, etc.<\/p>\n\n\n\n<p>6. Utilis\u00e9 dans le domaine biom\u00e9dical pour la chirurgie oculaire, le traitement de la peau et la d\u00e9coupe des tissus, etc., avec une qualit\u00e9 de faisceau et des performances de modulation \u00e9lev\u00e9es.<\/p>\n\n\n\n<p>7. L'impression 3D permet de fabriquer des pi\u00e8ces m\u00e9talliques avec une plus grande pr\u00e9cision et des structures complexes<\/p>\n\n\n\n<p>8. Armes laser avanc\u00e9es, etc.<\/p>\n\n\n\n<p>Les lasers \u00e0 fibre puls\u00e9s et les lasers \u00e0 fibre continus pr\u00e9sentent certaines diff\u00e9rences en termes de principes, de caract\u00e9ristiques techniques et d'applications, et chacun convient \u00e0 des situations diff\u00e9rentes. Les lasers \u00e0 fibre puls\u00e9s conviennent aux applications n\u00e9cessitant une puissance de pointe et des performances de modulation, telles que le traitement des mat\u00e9riaux et la biom\u00e9decine, tandis que les lasers \u00e0 fibre continus conviennent aux applications n\u00e9cessitant une grande stabilit\u00e9 et une qualit\u00e9 de faisceau \u00e9lev\u00e9e, telles que les communications et la recherche scientifique. Choisir le bon type de laser \u00e0 fibre en fonction de ses besoins sp\u00e9cifiques permet d'am\u00e9liorer l'efficacit\u00e9 du travail et la qualit\u00e9 des applications.<\/p>","protected":false},"excerpt":{"rendered":"<p>Les lasers \u00e0 fibre repr\u00e9sentent une part croissante des lasers industriels d'ann\u00e9e en ann\u00e9e en raison de leur structure simple, de leur faible co\u00fbt, de leur efficacit\u00e9 de conversion \u00e9lectro-optique \u00e9lev\u00e9e et de leurs bons effets de sortie. Selon les statistiques, les lasers \u00e0 fibre repr\u00e9sentaient 52,7% du march\u00e9 des lasers industriels en 2020. En fonction des caract\u00e9ristiques du faisceau de sortie, les lasers \u00e0 fibre peuvent \u00eatre [...]<\/p>","protected":false},"author":1,"featured_media":6424,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How To Choose Between Continuous And Pulsed Fiber Lasers? - Free Optic Laser Marking Machines<\/title>\n<meta name=\"description\" content=\"Fiber lasers account for an increasing share of industrial lasers year by year due to their simple structure, low cost, high electro-optical conversion efficiency, and good output effects.\" \/>\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.free-optic.com\/fr\/news\/how-to-choose-between-continuous-and-pulsed-fiber-lasers\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Choose Between Continuous And Pulsed Fiber Lasers? 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