{"id":13329,"date":"2023-08-07T02:43:37","date_gmt":"2023-08-07T02:43:37","guid":{"rendered":"https:\/\/www.rayzeek.com\/?p=13329"},"modified":"2023-12-26T08:38:00","modified_gmt":"2023-12-26T08:38:00","slug":"what-is-coherent-light","status":"publish","type":"post","link":"https:\/\/www.rayzeek.com\/fr\/glossaire\/quest-ce-que-la-lumiere-coherente","title":{"rendered":"Qu'est-ce que la lumi\u00e8re coh\u00e9rente ?"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-coherent-light\">Qu'est-ce que la lumi\u00e8re coh\u00e9rente ?<\/h2><p>La lumi\u00e8re coh\u00e9rente est le rayonnement \u00e9lectromagn\u00e9tique qui pr\u00e9sente une synchronisation dans les domaines spatial et temporel. Cette synchronisation est caract\u00e9ris\u00e9e par le fait que les ondes brillent dans la m\u00eame direction, oscillent au m\u00eame niveau et ont la m\u00eame phase. Par cons\u00e9quent, la lumi\u00e8re coh\u00e9rente consiste en une lumi\u00e8re d'une seule couleur avec une longueur d'onde sp\u00e9cifique. La principale caract\u00e9ristique de la lumi\u00e8re coh\u00e9rente est sa capacit\u00e9 \u00e0 maintenir une relation fixe entre les param\u00e8tres descriptifs tels que la fr\u00e9quence, la polarisation et la phase dans un contexte spatial et temporel sp\u00e9cifique. Cette synchronisation permet aux ondes de se renforcer mutuellement, ce qui se traduit par une lumi\u00e8re plus concentr\u00e9e et plus puissante.<\/p><p>La lumi\u00e8re coh\u00e9rente est g\u00e9n\u00e9ralement associ\u00e9e \u00e0 la technologie laser, o\u00f9 elle est g\u00e9n\u00e9r\u00e9e par le processus d'\u00e9mission stimul\u00e9e en utilisant un gain semi-conducteur comme support. Elle est \u00e9galement utilis\u00e9e dans diverses applications qui n\u00e9cessitent une synchronisation et un contr\u00f4le pr\u00e9cis de la propagation de la lumi\u00e8re, notamment dans les syst\u00e8mes de communication optique, l'holographie, l'interf\u00e9rom\u00e9trie et la photonique int\u00e9gr\u00e9e.<\/p><div class=\"insert_inquiry_outer_wrapper\"><h3>Vous recherchez des solutions d'\u00e9conomie d'\u00e9nergie activ\u00e9es par le mouvement ?<\/h3><p>Contactez-nous pour des d\u00e9tecteurs de mouvement PIR complets, des produits d'\u00e9conomie d'\u00e9nergie activ\u00e9s par le mouvement, des interrupteurs \u00e0 d\u00e9tecteur de mouvement et des solutions commerciales d'occupation\/occupation.<\/p><div class = \"insert_inquiry_buttons\"><div class = \"insert_inquiry_button_wrapper insert_inquiry_button_email\"><div><a href = \"mailto:info@rayzeek.com\"><p>Envoyer un courriel<\/p><\/a><\/div><\/div><div class = \"insert_inquiry_button_wrapper insert_inquiry_button_email_contact\"><div><a href=\"https:\/\/www.rayzeek.com\/fr\/contact\"><p>Formulaire de contact<\/p><\/a><\/div><\/div><div class = \"insert_inquiry_button_wrapper insert_inquiry_button_chat chat_jump\"><div><a href=\"#\"><p>Chat en ligne<\/p><\/a><\/div><\/div><\/div><\/div><div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">Questions fr\u00e9quemment pos\u00e9es<\/h2>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-is-the-difference-between-coherent-and-incoherent-light\">Quelle est la diff\u00e9rence entre la lumi\u00e8re coh\u00e9rente et la lumi\u00e8re incoh\u00e9rente ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>La lumi\u00e8re coh\u00e9rente se caract\u00e9rise par une fr\u00e9quence et une longueur d'onde uniques. En revanche, la lumi\u00e8re incoh\u00e9rente pr\u00e9sente diff\u00e9rentes fr\u00e9quences lumineuses et sa fr\u00e9quence peut changer de mani\u00e8re al\u00e9atoire.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-are-led-lights-coherent\">Les lumi\u00e8res LED sont-elles coh\u00e9rentes ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Contrairement au laser, les LED n'\u00e9mettent pas une lumi\u00e8re spectralement coh\u00e9rente ou hautement monochromatique. Toutefois, leur spectre est suffisamment \u00e9troit pour \u00eatre per\u00e7u par l'\u0153il humain comme une couleur pure (satur\u00e9e).<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-is-the-benefit-of-coherent-light\">Quels sont les avantages de la lumi\u00e8re coh\u00e9rente ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>L'avantage de la lumi\u00e8re coh\u00e9rente est qu'elle permet la mise en \u0153uvre du multiplexage, qui combine plusieurs signaux en un seul. Cette caract\u00e9ristique facilite un d\u00e9bit de donn\u00e9es plus \u00e9lev\u00e9 et une transmission sur de plus longues distances. En outre, l'optique coh\u00e9rente permet d'ajuster le nombre de canaux qui peuvent \u00eatre multiplex\u00e9s.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-do-you-make-light-coherent\">Comment rendre la lumi\u00e8re coh\u00e9rente<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Nous pouvons g\u00e9n\u00e9rer une lumi\u00e8re coh\u00e9rente \u00e0 partir d'une source incoh\u00e9rente en \u00e9liminant une partie importante de la lumi\u00e8re. Pour ce faire, la lumi\u00e8re provenant de la source incoh\u00e9rente est d'abord filtr\u00e9e afin d'am\u00e9liorer sa coh\u00e9rence spatiale, puis filtr\u00e9e de mani\u00e8re spectrale afin d'am\u00e9liorer sa coh\u00e9rence temporelle.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-light-cannot-be-coherent\">Quelle lumi\u00e8re ne peut \u00eatre coh\u00e9rente ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Deux sources de lumi\u00e8re ind\u00e9pendantes l'une de l'autre ne peuvent pas \u00eatre coh\u00e9rentes. Cela est d\u00fb au fait que la lumi\u00e8re est \u00e9mise par des atomes individuels lorsqu'ils reviennent \u00e0 leur \u00e9tat fondamental. M\u00eame la plus petite source de lumi\u00e8re est constitu\u00e9e de milliards d'atomes, ce qui rend impossible l'\u00e9mission d'ondes lumineuses dans la m\u00eame phase.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-is-white-light-coherent-or-incoherent\">La lumi\u00e8re blanche est-elle coh\u00e9rente ou incoh\u00e9rente ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Enfin, la lumi\u00e8re blanche, avec sa large gamme de fr\u00e9quences, est une onde qui fluctue rapidement en amplitude et en phase. En raison de son court temps de coh\u00e9rence, qui n'est que d'environ 10 p\u00e9riodes, elle est commun\u00e9ment qualifi\u00e9e d'incoh\u00e9rente.<\/p><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>La lumi\u00e8re coh\u00e9rente est le rayonnement \u00e9lectromagn\u00e9tique qui pr\u00e9sente une synchronisation dans les domaines spatial et temporel. Cette synchronisation est caract\u00e9ris\u00e9e par le fait que les ondes brillent dans la m\u00eame direction, oscillent au m\u00eame niveau et ont la m\u00eame phase.<\/p>","protected":false},"author":4,"featured_media":12864,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"laser technology\", \"idxall\": 0, \"keywordtitlesimi\": 0.7875840663909912, \"keywordslugsimi\": 0.7875840663909912, \"paratitlesimi\": 0.7111015319824219, \"paraslugsimi\": 0.7111015319824219, \"slug\": \"what-is-laser-light\", \"title\": \"What is Laser Light\", \"id\": 13976}, {\"keyword\": \"medium\", \"idxall\": 0, \"keywordtitlesimi\": 0.764789879322052, \"keywordslugsimi\": 0.764789879322052, \"paratitlesimi\": 0.5488243699073792, \"paraslugsimi\": 0.5488243699073792, \"slug\": \"what-is-medium-light\", \"title\": \"What is Medium Light\", \"id\": 13818}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Coherent Light","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-13329","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Coherent Light - Rayzeek<\/title>\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.rayzeek.com\/fr\/glossaire\/quest-ce-que-la-lumiere-coherente\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Coherent Light - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"Coherent light is the electromagnetic radiation that exhibits synchronization in both the spatial and temporal domains. This synchronization is characterized by the waves shining in the same direction, swinging at the same level, and having the same phase.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rayzeek.com\/fr\/glossaire\/quest-ce-que-la-lumiere-coherente\" \/>\n<meta property=\"og:site_name\" content=\"Rayzeek\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/bester001\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/bester001\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-07T02:43:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-12-26T08:38:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-6.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Horace He\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@RayzeekTech\" \/>\n<meta name=\"twitter:site\" content=\"@RayzeekTech\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Horace He\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light\"},\"author\":{\"name\":\"Horace He\",\"@id\":\"https:\/\/www.rayzeek.com\/#\/schema\/person\/ff0b4bd6573444e02efc8613274549c4\"},\"headline\":\"What is Coherent Light\",\"datePublished\":\"2023-08-07T02:43:37+00:00\",\"dateModified\":\"2023-12-26T08:38:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light\"},\"wordCount\":445,\"publisher\":{\"@id\":\"https:\/\/www.rayzeek.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-6.jpg\",\"keywords\":[\"glossary\"],\"articleSection\":[\"glossary\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light\",\"url\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light\",\"name\":\"What is Coherent Light - Rayzeek\",\"isPartOf\":{\"@id\":\"https:\/\/www.rayzeek.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-6.jpg\",\"datePublished\":\"2023-08-07T02:43:37+00:00\",\"dateModified\":\"2023-12-26T08:38:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light#primaryimage\",\"url\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-6.jpg\",\"contentUrl\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-6.jpg\",\"width\":1200,\"height\":800},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-coherent-light#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.rayzeek.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is Coherent Light\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.rayzeek.com\/#website\",\"url\":\"https:\/\/www.rayzeek.com\/\",\"name\":\"Rayzeek\",\"description\":\"Motion Sensor &amp; 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