{"id":413382,"date":"2023-02-09T10:21:06","date_gmt":"2023-02-09T09:21:06","guid":{"rendered":"https:\/\/www.ecinews.fr\/?p=413382"},"modified":"2023-02-09T10:21:06","modified_gmt":"2023-02-09T09:21:06","slug":"spectrometres-et-detecteur-mir-haute-cadence-2-12-%c2%b5m","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/spectrometres-et-detecteur-mir-haute-cadence-2-12-%c2%b5m\/","title":{"rendered":"Spectrom\u00e8tres et d\u00e9tecteur MIR haute cadence 2 &#8211; 12 \u00b5m"},"content":{"rendered":"<p>L&rsquo;analyse non invasive de gaz, liquides et solides n\u00e9cessite de plus en plus d&rsquo;effectuer des mesures spectrales dans l&rsquo;Infra Rouge Moyen (MIR). Les techniques pr\u00e9sentes sur le march\u00e9 sont g\u00e9n\u00e9ralement co\u00fbteuses, lentes et\/ou limit\u00e9es spectralement. La technologie brevet\u00e9e d\u00e9velopp\u00e9e par NLIR utilise des effets non lin\u00e9aires (up-conversion ou somme de fr\u00e9quence) : en \u00ab\u00a0m\u00e9langeant\u00a0\u00bb le signal \u00e0 mesurer avec celui d&rsquo;un laser 1064 nm int\u00e9gr\u00e9 \u00e0 l&rsquo;instrument dans un cristal LiNBO3, on peut \u00ab\u00a0voir\u00a0\u00bb dans le visible et le proche Infra-rouge ce qui se passe dans le MIR. Ce cristal de conversion est suivi d\u2019un r\u00e9seau de diffraction et d\u2019un d\u00e9tecteur proche visible pour mesurer le spectre du MIR converti. L\u2019avantage de cette technologie est qu\u2019elle permet l&rsquo;utilisation de d\u00e9tecteurs standards, performants, peu co\u00fbteux, rapides (400 Hz en standard pour un spectre complet, jusqu&rsquo;\u00e0 130 kHz sur demande), et ne n\u00e9cessitant pas de refroidissement \u00e0 tr\u00e8s basse temp\u00e9rature. De plus, les niveaux de sensibilit\u00e9 et de bruits obtenus sont remarquables et la technologie n&rsquo;a aucune pi\u00e8ce mobile ce qui la rend tr\u00e8s robuste. Cette nouvelle approche permet d&rsquo;envisager nombre de nouvelles applications, tant en environnement industriel que scientifique.<\/p>\n<p>La version NLIR S2050 couvre la gamme 2,0 \u00e0 5,0 \u00b5m (2000 &#8211; 5000 cm-1) avec une entr\u00e9e fibre ou en espace libre. Elle est particuli\u00e8rement adapt\u00e9e \u00e0 l&rsquo;analyse de nombreuses liaisons C-H ou des plastiques sombres par exemple. Le prototype NLIR S76120 est propos\u00e9 en couplage en espace libre couvrant la gamme ~ 7.6 \u00e0 12 \u00b5m (833 &#8211; 1315 cm-1), permettant d&rsquo;\u00e9tendre le champ des applications potentielles.<\/p>\n<p>La m\u00eame technologie permet \u00e9galement de proposer des d\u00e9tecteurs monolongueur d&rsquo;onde fonctionnant \u00e0 temp\u00e9rature ambiante avec une sensibilit\u00e9 in\u00e9gal\u00e9e (un ordre de grandeur ou plus par rapport aux d\u00e9tecteurs classiques comme InSb ou MCT (HgCeTe).<\/p>\n<p>&nbsp;<\/p>\n<p><a title=\"www.optonlaser.com\" href=\"http:\/\/www.optonlaser.com\">www.optonlaser.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;analyse non invasive de gaz, liquides et solides n\u00e9cessite de plus en plus d&rsquo;effectuer des mesures spectrales dans l&rsquo;Infra Rouge Moyen (MIR). Les techniques pr\u00e9sentes sur le march\u00e9 sont g\u00e9n\u00e9ralement co\u00fbteuses, lentes et\/ou limit\u00e9es spectralement. La technologie brevet\u00e9e d\u00e9velopp\u00e9e par NLIR utilise des effets non lin\u00e9aires (up-conversion ou somme de fr\u00e9quence) : en \u00ab\u00a0m\u00e9langeant\u00a0\u00bb le [&hellip;]<\/p>\n","protected":false},"author":36,"featured_media":413383,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[935,907],"domains":[47],"ppma_author":[1154],"class_list":["post-413382","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-mesure","tag-optoelectronics-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Spectrom\u00e8tres et d\u00e9tecteur MIR haute cadence 2 - 12 \u00b5m ...<\/title>\n<meta name=\"description\" content=\"L&rsquo;analyse non invasive de gaz, liquides et solides n\u00e9cessite de plus en plus d&rsquo;effectuer des mesures spectrales dans l&rsquo;Infra Rouge Moyen...\" \/>\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.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/413382\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spectrom\u00e8tres et d\u00e9tecteur MIR haute cadence 2 - 12 \u00b5m\" \/>\n<meta property=\"og:description\" content=\"L&rsquo;analyse non invasive de gaz, liquides et solides n\u00e9cessite de plus en plus d&rsquo;effectuer des mesures spectrales dans l&rsquo;Infra Rouge Moyen (MIR). 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