{"id":19242,"date":"2025-09-02T16:41:45","date_gmt":"2025-09-02T14:41:45","guid":{"rendered":"https:\/\/amplitude-laser.com\/applications\/%application_category%\/tr-arpes\/"},"modified":"2025-09-02T18:08:42","modified_gmt":"2025-09-02T16:08:42","slug":"tr-arpes","status":"publish","type":"application","link":"https:\/\/amplitude-laser.com\/fr\/applications\/science-fr\/tr-arpes\/","title":{"rendered":"TR-ARPES"},"content":{"rendered":"\n<p><strong>La spectroscopie de photo\u00e9mission (PES) d\u00e9signe la mesure de l&rsquo;\u00e9nergie et de la quantit\u00e9 de mouvement des \u00e9lectrons \u00e9mis par des solides gr\u00e2ce \u00e0 l&rsquo;utilisation de photons. L&rsquo;\u00e9nergie d&rsquo;ionisation est fournie par XUV (PES ou ARPES) ou EUV (2PPES), tandis que la pompe est g\u00e9n\u00e9ralement fournie par un OPA.<\/strong><\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p>L&rsquo;ARPES est utilis\u00e9 pour cartographier la structure compl\u00e8te des bandes \u00e9lectroniques des conducteurs et des isolants, entre autres. La spectroscopie de photo\u00e9mission r\u00e9solue en temps et en angle (TR-ARPES) ajoute une r\u00e9solution temporelle de l&rsquo;ordre de la femtoseconde, ce qui permet \u00e9galement de r\u00e9soudre les processus de diffusion \u00e9l\u00e9mentaires dans la structure des bandes \u00e9lectroniques.<\/p>\n\n\n\n<p>Pour \u00e9viter les probl\u00e8mes de charge spatiale (r\u00e9pulsion des \u00e9lectrons entre eux), un seul \u00e9lectron ou moins doit \u00eatre produit et analys\u00e9 par tir laser. L&rsquo;application n\u00e9cessite donc des sources \u00e0 \u00e9nergie mod\u00e9r\u00e9e et \u00e0 fr\u00e9quence de r\u00e9p\u00e9tition \u00e9lev\u00e9e, et une mesure compl\u00e8te dure g\u00e9n\u00e9ralement 4 heures \u00e0 200 kHz.<\/p>\n\n\n\n<p>La gamme d&rsquo;amplitude des lasers \u00e0 ytterbium, tels que le <a href=\"https:\/\/amplitude-laser.com\/fr\/produits\/lasers-femtosecondes\/lasers-pour-lindustrie-fr\/satsuma-x\/\" target=\"_blank\" rel=\"noreferrer noopener\">SatsumaX<\/a> et le <a href=\"https:\/\/amplitude-laser.com\/fr\/produits\/lasers-femtosecondes\/lasers-pour-lindustrie-fr\/tangor\/\" target=\"_blank\" rel=\"noreferrer noopener\">Tangor 100<\/a>, en fait des sources d&rsquo;alimentation id\u00e9ales pour cette application. Des modules suppl\u00e9mentaires tels que COMPRESS et la chambre HHG, combin\u00e9s au Fastlite twinStarzz MIR OPA, sont des dispositifs de pointe permettant de construire une configuration TR-ARPES unique \u00e0 partir d&rsquo;un seul fournisseur.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\"><div class=\"wp-block-image\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e1b1940ae33&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e1b1940ae33\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"599\" height=\"350\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2025\/09\/schema-arpes-spectroscopy-amplitude-laser.webp\" alt=\"Arpes spectroscopy schema - Amplitude Laser\" class=\"wp-image-19212\" srcset=\"https:\/\/amplitude-laser.com\/wp-content\/uploads\/2025\/09\/schema-arpes-spectroscopy-amplitude-laser.webp 599w, https:\/\/amplitude-laser.com\/wp-content\/uploads\/2025\/09\/schema-arpes-spectroscopy-amplitude-laser-300x175.webp 300w\" sizes=\"(max-width: 599px) 100vw, 599px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Agrandir\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><\/div>\n<\/div>\n","protected":false},"featured_media":6963,"template":"","application_category":[114],"class_list":["post-19242","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>TR-ARPES - 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\/tr-arpes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TR-ARPES - Amplitude\" \/>\n<meta property=\"og:description\" content=\"La spectroscopie de photo\u00e9mission (PES) d\u00e9signe la mesure de l&rsquo;\u00e9nergie et de la quantit\u00e9 de mouvement des \u00e9lectrons \u00e9mis par des solides gr\u00e2ce \u00e0 l&rsquo;utilisation de photons. 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