{"id":55338,"date":"2023-02-03T15:57:19","date_gmt":"2023-02-03T13:57:19","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=55338"},"modified":"2023-02-03T15:57:19","modified_gmt":"2023-02-03T13:57:19","slug":"these-quinchard-g-detecteur-infrarouge-heterodyne-a-cascade-quantique","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/these\/these-2021\/these-quinchard-g-detecteur-infrarouge-heterodyne-a-cascade-quantique.html","title":{"rendered":"THESE :  QUINCHARD G. D\u00e9tecteur infrarouge h\u00e9t\u00e9rodyne \u00e0 cascade quantique"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_ym6533uyfhnc\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-55338'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-b95e04fefca7df082907f42d5a7b90bd\">\n#top .av-special-heading.av-av_heading-b95e04fefca7df082907f42d5a7b90bd{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-av_heading-b95e04fefca7df082907f42d5a7b90bd .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-b95e04fefca7df082907f42d5a7b90bd .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-b95e04fefca7df082907f42d5a7b90bd av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : QUINCHARD G. D\u00e9tecteur infrarouge h\u00e9t\u00e9rodyne \u00e0 cascade quantique <\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<p><strong>QUINCHARD G.<\/strong><\/p>\n<p>Soutenance : 8 septembre 2021<strong><br \/>\n<\/strong>Th\u00e8se de doctorat en Electronique, micro\u00e9lectronique, nano\u00e9lectronique et micro-ondes, Universit\u00e9 de Lille, ENGSYS Sciences de l\u2019ing\u00e9nierie et des syst\u00e8mes.<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5>Summary:<\/h5>\n<p>La gamme spectrale du moyen infrarouge (MIR : 3-12 \u03bcm) s\u2019ouvre aujourd\u2019hui \u00e0 de nouvelles possibilit\u00e9s d\u2019applications gr\u00e2ce \u00e0 la maturit\u00e9 des lasers \u00e0 cascade quantique : communications espace libre, spectroscopie, LIDAR\u2026 Or, il n\u2019existe aujourd\u2019hui pas de d\u00e9tecteur rapide fonctionnant \u00e0 temp\u00e9rature ambiante dans cette gamme spectrale : tel est l\u2019objectif de ce travail de th\u00e8se qui s\u2019appuie sur la technologie des d\u00e9tecteurs \u00e0 multipuits quantiques, technologie fonctionnant aujourd\u2019hui \u00e0 des temp\u00e9ratures cryog\u00e9niques pour des raisons thermodynamiques. Pour contourner cette limitation fondamentale, ce travail s\u2019appuie entre autres sur les r\u00e9cents progr\u00e8s dans le domaine des antennes optiques, qui permettent de red\u00e9finir radicalement l\u2019architecture de d\u00e9tection. Les r\u00e9alisations dans le MIR restent encore largement \u00e0 d\u00e9fricher, compar\u00e9es aux longueurs d\u2019onde visibles. L\u2019ambition de cette th\u00e8se est de d\u00e9montrer la pertinence de la technologie des d\u00e9tecteurs \u00e0 cascade quantique int\u00e9gr\u00e9e aux architectures d\u2019antennes optiques et de tenter de d\u00e9gager les principaux leviers d\u2019optimisation et les compromis quant aux performances du senseur optique aussi bien en termes de conception que de fabrication. Ce travail s\u2019int\u00e9resse aux syst\u00e8mes de couplage optique utilis\u00e9s dans les technologies de d\u00e9tection inter-soubande pour palier aux faibles rendements d\u2019absorption ISB. L\u2019absorption optique exp\u00e9rimentale d\u2019un syst\u00e8me en g\u00e9om\u00e9trie patch, solution retenue dans ces travaux, est \u00e9tudi\u00e9e. La description \u00e9lectromagn\u00e9tique des syst\u00e8mes en cavit\u00e9 planaire MIM puis des g\u00e9om\u00e9tries patch men\u00e9e conduit \u00e0 la mod\u00e9lisation de l\u2019absorption totale du syst\u00e8me selon diff\u00e9rents canaux de dissipations via la th\u00e9orie des modes coupl\u00e9s. La question de l\u2019optimisation de l\u2019absorption est abord\u00e9e. Les performances DC (courant d\u2019obscurit\u00e9, r\u00e9ponse et rendement quantique) sont \u00e9tudi\u00e9s ainsi que le processus de fabrication d\u00e9velopp\u00e9 durant cette th\u00e8se. Ces r\u00e9sultats exp\u00e9rimentaux, en accord avec les mod\u00e8les th\u00e9oriques, permettent de placer les performances du d\u00e9tecteur \u00e0 l\u2019\u00e9tat de l\u2019art pour la fili\u00e8re des d\u00e9tecteurs \u00e0 cascade quantique. Enfin, les performances du syst\u00e8me dans un sch\u00e9ma de d\u00e9tection h\u00e9t\u00e9rodyne. Une caract\u00e9risation exp\u00e9rimentale accompagn\u00e9e d\u2019un mod\u00e8le analytique sont pr\u00e9sent\u00e9s. Une bande passante de 30 GHz \u00e0 temp\u00e9rature ambiante est d\u00e9montr\u00e9e.<\/p>\n<h5>Abstract:<\/h5>\n<p>The mid-infrared spectral range (MIR: 3-12 \u03bcm) is now opening up to new application possibilities thanks to the maturity of quantum cascade lasers: free space communications, spectroscopy, LIDAR\u2026 However, there is currently no fast detector operating at room temperature in this spectral range: this is the objective of this thesis work, which is based on the technology of quantum multi-well detectors, a technology currently operating at cryogenic temperatures for thermodynamic reasons. To overcome this fundamental limitation, this work relies among others on the recent progress in the field of optical antennas, which allow to radically redefine the detection architecture. The achievements in the MIR are still largely to be cleared, compared to visible wavelengths. The ambition of this thesis is to demonstrate the relevance of quantum cascade detector technology integrated in optical antenna architectures and to try to identify the main optimization levers and trade-offs in terms of optical sensor performance both in terms of design and fabrication. This work focuses on optical coupling systems used in inter-band detection technologies to overcome the low ISB absorption efficiency. The experimental optical absorption of a system in patch geometry, the solution chosen in this work, is studied. The electromagnetic description of the MIM planar cavity systems and of the patch geometries leads to the modeling of the total absorption of the system according to different dissipation channels via the theory of coupled modes. The question of the optimization of the absorption is addressed. The DC performances (dark current, response and quantum efficiency) are studied as well as the fabrication process developed during this thesis. These experimental results, in agreement with the theoretical models, allow to place the performances of the detector at the state of the art for the quantum cascade detectors. Finally, the performances of the system in a heterodyne detection scheme. An experimental characterization accompanied by an analytical model are presented. A bandwidth of 30 GHz at room temperature is demonstrated.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[317],"tags":[],"class_list":["post-55338","post","type-post","status-publish","format-standard","hentry","category-these-2021"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55338","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=55338"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55338\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=55338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=55338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=55338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}