{"id":19305,"date":"2025-09-02T16:00:36","date_gmt":"2025-09-02T14:00:36","guid":{"rendered":"https:\/\/amplitude-laser.com\/applications\/%application_category%\/terahertz-generation\/"},"modified":"2025-09-03T16:00:00","modified_gmt":"2025-09-03T14:00:00","slug":"generation-terahertz","status":"publish","type":"application","link":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/","title":{"rendered":"G\u00e9n\u00e9ration de t\u00e9rahertz"},"content":{"rendered":"\n<p><strong>Le rayonnement t\u00e9rahertz est largement utilis\u00e9 \u00e0 des fins de s\u00e9curit\u00e9 et produit \u00e0 l&rsquo;aide de dispositifs \u00e9lectroniques. Les lasers intenses ont permis de produire un rayonnement t\u00e9rahertz intense et\/ou \u00e0 large bande gr\u00e2ce \u00e0 diff\u00e9rents processus optiques. Ce rayonnement t\u00e9rahertz intense pr\u00e9sente un int\u00e9r\u00eat pour de nombreuses applications en science des mat\u00e9riaux, telles que l&rsquo;analyse des mat\u00e9riaux dans des exp\u00e9riences dynamiques, y compris les propri\u00e9t\u00e9s magn\u00e9tiques, mais aussi dans les acc\u00e9l\u00e9rateurs pour le marquage temporel, la d\u00e9viation ou l&rsquo;acc\u00e9l\u00e9ration des \u00e9lectrons.<\/strong><\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e9canismes de g\u00e9n\u00e9ration<\/h2>\n\n\n\n<p>Parmi les diff\u00e9rents processus permettant de g\u00e9n\u00e9rer un rayonnement t\u00e9rahertz \u00e0 l&rsquo;aide de lasers intenses, on peut utiliser la filamentation bicolore, la g\u00e9n\u00e9ration de fr\u00e9quence diff\u00e9rentielle ou la rectification optique dans des cristaux organiques ou inorganiques.<\/p>\n\n\n\n<p>La filamentation bicolore consiste \u00e0 focaliser la longueur d&rsquo;onde fondamentale et la deuxi\u00e8me harmonique d&rsquo;un laser intense dans l&rsquo;air, g\u00e9n\u00e9rant un plasma avec une forte distorsion de champ, qui se termine par un rayonnement t\u00e9rahertz intense induit par le courant \u00e9lectronique local. Le processus est \u00e0 large bande et permet d&rsquo;atteindre une bande passante allant jusqu&rsquo;\u00e0 10 THz lorsqu&rsquo;on utilise des impulsions courtes.<\/p>\n\n\n\n<p>La rectification optique est un processus induit par des impulsions intenses se propageant dans des mat\u00e9riaux di\u00e9lectriques. En raison de la forte diff\u00e9rence de fr\u00e9quence entre le rayonnement laser et le rayonnement t\u00e9rahertz, les conditions de correspondance de phase et de chevauchement spatial n\u00e9cessitent soit l&rsquo;utilisation de cristaux organiques hautement non lin\u00e9aires, soit des faisceaux \u00e0 inclinaison frontale dans des cristaux inorganiques tels que le LiNbO3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Solutions d&rsquo;amplitude<\/h2>\n\n\n\n<p>Amplitude propose une large gamme de solutions : pour la g\u00e9n\u00e9ration de t\u00e9rahertz \u00e0 large bande avec filamentation bicolore, les lasers TiSa ultra-courts ont \u00e9t\u00e9 largement utilis\u00e9s, et aujourd&rsquo;hui, les lasers Ytterbium post-compress\u00e9s suscitent un int\u00e9r\u00eat croissant. Pour la rectification optique dans les cristaux organiques, les lasers Ytterbium sont g\u00e9n\u00e9ralement pr\u00e9f\u00e9r\u00e9s, et pour les cristaux organiques, les sources MIR OPCPA constituent la meilleure option.<\/p>\n","protected":false},"featured_media":6963,"template":"","application_category":[114],"class_list":["post-19305","application","type-application","status-publish","has-post-thumbnail","hentry","application_category-science-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>G\u00e9n\u00e9ration de t\u00e9rahertz - Amplitude<\/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:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"G\u00e9n\u00e9ration de t\u00e9rahertz - Amplitude\" \/>\n<meta property=\"og:description\" content=\"Le rayonnement t\u00e9rahertz est largement utilis\u00e9 \u00e0 des fins de s\u00e9curit\u00e9 et produit \u00e0 l&rsquo;aide de dispositifs \u00e9lectroniques. Les lasers intenses ont permis de produire un rayonnement t\u00e9rahertz intense et\/ou \u00e0 large bande gr\u00e2ce \u00e0 diff\u00e9rents processus optiques. Ce rayonnement t\u00e9rahertz intense pr\u00e9sente un int\u00e9r\u00eat pour de nombreuses applications en science des mat\u00e9riaux, telles que [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/\" \/>\n<meta property=\"og:site_name\" content=\"Amplitude\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-03T14:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2021\/07\/image-soon-waiting.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/\",\"url\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/\",\"name\":\"G\u00e9n\u00e9ration de t\u00e9rahertz - Amplitude\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/amplitude-laser.com\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/image-soon-waiting.jpg\",\"datePublished\":\"2025-09-02T14:00:36+00:00\",\"dateModified\":\"2025-09-03T14:00:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/#primaryimage\",\"url\":\"https:\\\/\\\/amplitude-laser.com\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/image-soon-waiting.jpg\",\"contentUrl\":\"https:\\\/\\\/amplitude-laser.com\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/image-soon-waiting.jpg\",\"width\":1920,\"height\":1080},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/applications\\\/science-fr\\\/generation-terahertz\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/amplitude-laser.com\\\/fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"G\u00e9n\u00e9ration de t\u00e9rahertz\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/#website\",\"url\":\"https:\\\/\\\/amplitude-laser.com\\\/\",\"name\":\"Amplitude\",\"description\":\"Nothing But Ultrafast\",\"publisher\":{\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/#organization\"},\"alternateName\":\"Amplitude Laser\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/amplitude-laser.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/#organization\",\"name\":\"Amplitude Laser\",\"alternateName\":\"Amplitude\",\"url\":\"https:\\\/\\\/amplitude-laser.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/amplitude-laser.com\\\/wp-content\\\/uploads\\\/2018\\\/10\\\/Amplitude.png\",\"contentUrl\":\"https:\\\/\\\/amplitude-laser.com\\\/wp-content\\\/uploads\\\/2018\\\/10\\\/Amplitude.png\",\"width\":999,\"height\":1182,\"caption\":\"Amplitude Laser\"},\"image\":{\"@id\":\"https:\\\/\\\/amplitude-laser.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"G\u00e9n\u00e9ration de t\u00e9rahertz - Amplitude","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/","og_locale":"fr_FR","og_type":"article","og_title":"G\u00e9n\u00e9ration de t\u00e9rahertz - Amplitude","og_description":"Le rayonnement t\u00e9rahertz est largement utilis\u00e9 \u00e0 des fins de s\u00e9curit\u00e9 et produit \u00e0 l&rsquo;aide de dispositifs \u00e9lectroniques. Les lasers intenses ont permis de produire un rayonnement t\u00e9rahertz intense et\/ou \u00e0 large bande gr\u00e2ce \u00e0 diff\u00e9rents processus optiques. Ce rayonnement t\u00e9rahertz intense pr\u00e9sente un int\u00e9r\u00eat pour de nombreuses applications en science des mat\u00e9riaux, telles que [&hellip;]","og_url":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/","og_site_name":"Amplitude","article_modified_time":"2025-09-03T14:00:00+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2021\/07\/image-soon-waiting.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/","url":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/","name":"G\u00e9n\u00e9ration de t\u00e9rahertz - Amplitude","isPartOf":{"@id":"https:\/\/amplitude-laser.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/#primaryimage"},"image":{"@id":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/#primaryimage"},"thumbnailUrl":"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2021\/07\/image-soon-waiting.jpg","datePublished":"2025-09-02T14:00:36+00:00","dateModified":"2025-09-03T14:00:00+00:00","breadcrumb":{"@id":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/#primaryimage","url":"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2021\/07\/image-soon-waiting.jpg","contentUrl":"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2021\/07\/image-soon-waiting.jpg","width":1920,"height":1080},{"@type":"BreadcrumbList","@id":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/generation-terahertz\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/amplitude-laser.com\/fr\/"},{"@type":"ListItem","position":2,"name":"G\u00e9n\u00e9ration de t\u00e9rahertz"}]},{"@type":"WebSite","@id":"https:\/\/amplitude-laser.com\/#website","url":"https:\/\/amplitude-laser.com\/","name":"Amplitude","description":"Nothing But Ultrafast","publisher":{"@id":"https:\/\/amplitude-laser.com\/#organization"},"alternateName":"Amplitude Laser","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/amplitude-laser.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/amplitude-laser.com\/#organization","name":"Amplitude Laser","alternateName":"Amplitude","url":"https:\/\/amplitude-laser.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/amplitude-laser.com\/#\/schema\/logo\/image\/","url":"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2018\/10\/Amplitude.png","contentUrl":"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2018\/10\/Amplitude.png","width":999,"height":1182,"caption":"Amplitude Laser"},"image":{"@id":"https:\/\/amplitude-laser.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/amplitude-laser.com\/fr\/wp-json\/wp\/v2\/application\/19305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amplitude-laser.com\/fr\/wp-json\/wp\/v2\/application"}],"about":[{"href":"https:\/\/amplitude-laser.com\/fr\/wp-json\/wp\/v2\/types\/application"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amplitude-laser.com\/fr\/wp-json\/wp\/v2\/media\/6963"}],"wp:attachment":[{"href":"https:\/\/amplitude-laser.com\/fr\/wp-json\/wp\/v2\/media?parent=19305"}],"wp:term":[{"taxonomy":"application_category","embeddable":true,"href":"https:\/\/amplitude-laser.com\/fr\/wp-json\/wp\/v2\/application_category?post=19305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}