{"id":72067,"date":"2025-01-30T15:51:28","date_gmt":"2025-01-30T13:51:28","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=72067"},"modified":"2025-02-25T11:45:03","modified_gmt":"2025-02-25T09:45:03","slug":"maximising-the-electromagnetic-efficiency-of-spintronic-terahertz-transmitters","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/newsletter\/maximising-the-electromagnetic-efficiency-of-spintronic-terahertz-transmitters.html","title":{"rendered":"Maximising the electromagnetic efficiency of spintronic terahertz transmitters"},"content":{"rendered":"<div  class='flex_column av-2wo5xtj-fea3e9b7cfb64e774d7c6f7e6914db5c av_one_full  avia-builder-el-0  el_before_av_hr  avia-builder-el-first  first flex_column_div'     ><section  class='av_textblock_section av-swmx9z-fa3e3cd9aca324bd791df9aba61dceb8'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1 style=\"text-align: center;\"><span style=\"color: #de7600;\">\u00a0<\/span><\/h1>\n<h1 style=\"text-align: center;\"><span style=\"color: #ff9900;\">Maximising the electromagnetic efficiency of spintronic terahertz transmitters<\/span><\/h1>\n<h1 style=\"text-align: center;\"><span class=\"field field--name-title field--type-string field--label-hidden\">\u00a0<\/span><\/h1>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2i9rtef-600472cd3cf2111b2d07a851baaa2b0e\">\n#top .hr.av-2i9rtef-600472cd3cf2111b2d07a851baaa2b0e{\nmargin-top:30px;\nmargin-bottom:30px;\n}\n.hr.av-2i9rtef-600472cd3cf2111b2d07a851baaa2b0e .hr-inner{\nwidth:200;\nmax-width:45%;\n}\n<\/style>\n<div  class='hr av-2i9rtef-600472cd3cf2111b2d07a851baaa2b0e hr-custom  avia-builder-el-2  el_after_av_one_full  el_before_av_one_full  hr-center hr-icon-yes'><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><span class='av-seperator-icon' aria-hidden='true' data-av_icon='\ue808' data-av_iconfont='entypo-fontello'><\/span><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<div  class='flex_column av-qqiw3u-4739972a6571651ab0bc3328b1389217 av_one_full  avia-builder-el-3  el_after_av_hr  el_before_av_three_fourth  first flex_column_div'     ><section  class='av_textblock_section av-m6jcv6oc-dda5486881b9d3a60facf9c7a0fce985'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-72048 aligncenter\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-1030x201.png\" alt=\"\" width=\"1030\" height=\"201\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-1030x201.png 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-300x59.png 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-768x150.png 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-1536x300.png 1536w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-2048x400.png 2048w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-18x4.png 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-1500x293.png 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/figure1-705x138.png 705w\" sizes=\"auto, (max-width: 1030px) 100vw, 1030px\" \/><\/a><\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-243lh4n-2e4572d8cfdaada1730945fe1a025e85\">\n@keyframes av_boxShadowEffect_av-243lh4n-2e4572d8cfdaada1730945fe1a025e85-column {\n0%   { box-shadow:  0 0 0 0 #dbdbdb; opacity: 1; }\n100% { box-shadow:  0 0 10px 0 #dbdbdb; opacity: 1; }\n}\n.flex_column.av-243lh4n-2e4572d8cfdaada1730945fe1a025e85{\nwidth:73.5%;\nbox-shadow: 0 0 10px 0 #dbdbdb;\nborder-radius:15px 15px 15px 15px;\npadding:40px 40px 40px 40px;\nbackground-color:#d8d8d8;\nbackground:linear-gradient( to top, #d8d8d8, #e5e5e5, #ffffff );\n}\n.flex_column.av-243lh4n-2e4572d8cfdaada1730945fe1a025e85 .avia-divider-svg-top{\nborder-radius:15px 15px 0 0;\n}\n.flex_column.av-243lh4n-2e4572d8cfdaada1730945fe1a025e85 .avia-divider-svg-top svg{\nheight:35px;\nwidth:calc(100% + 1.3px);\nfill:#ed9e17;\n}\n<\/style>\n<div  class='flex_column av-243lh4n-2e4572d8cfdaada1730945fe1a025e85 av_three_fourth  avia-builder-el-5  el_after_av_one_full  el_before_av_one_fourth  first av-break-at-tablet flex_column_div av-animated-generic fade-in shadow-not-animated  column-top-margin'     ><div class='avia-divider-svg avia-divider-svg-triangle avia-divider-svg-top avia-svg-original'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 1000 100\" preserveaspectratio=\"none\">\n\t<path d=\"M500,98.9L0,6.1V0h1000v6.1L500,98.9z\"\/>\n<\/svg><\/div><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m0zakv6p-368f9103db3846e5ccfff4244fcea564\">\n#top .av_textblock_section.av-m0zakv6p-368f9103db3846e5ccfff4244fcea564 .avia_textblock{\ntext-align:justify;\n}\n<\/style>\n<section  class='av_textblock_section av-m0zakv6p-368f9103db3846e5ccfff4244fcea564'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"introduction\" style=\"text-align: left;\">\n<div class=\"clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item\">\n<div class=\"tex2jax_process\">\n<p><strong><span style=\"color: #333399;\">\u00a0<\/span><\/strong><\/p>\n<p><strong><span style=\"color: #008080;\"><span style=\"color: #ff7b0f;\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mqde7m-a271d0d206916d71f6272c97868fc8fa\">\n.av_font_icon.av-mqde7m-a271d0d206916d71f6272c97868fc8fa{\ncolor:#08080;\nborder-color:#08080;\n}\n.av_font_icon.av-mqde7m-a271d0d206916d71f6272c97868fc8fa .av-icon-char{\nfont-size:25px;\nline-height:25px;\n}\n<\/style>\n<span  class='av_font_icon av-mqde7m-a271d0d206916d71f6272c97868fc8fa 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='\ue885' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/span><\/span><\/strong><\/p>\n<p><strong>Spintronic terahertz (THz) emitters<\/strong> are devices that use spintronics to generate radiation in the terahertz frequency range (0.1 to 30 THz). These devices represent a promising alternative to conventional terahertz sources thanks to their simplicity, efficiency and compatibility with integrated systems.<br \/>\nIn these devices, created by stacking layers of nanometric thickness, a spin current created in a ferromagnetic layer by excitation by a femtosecond laser pulse is injected into a non-magnetic material with a strong spin-orbit coupling, such as platinum or tungsten. The spin current is converted into an oscillating charge current via the inverse spin Hall effect, generating electromagnetic radiation in the terahertz range, as shown schematically <span style=\"text-decoration: underline;\"><em>(Figure a).<br \/>\n<\/em><\/span>These emitters have several advantages: they are compact, robust, inexpensive and operate at room temperature. What&rsquo;s more, their emission spectrum is very broad, with no absorption lines due to the phonons present in other sources. Spintronic terahertz transmitters have applications in a variety of fields, including spectroscopy, imaging, ultra-fast wireless communications and fundamental studies of spin dynamics.<\/p>\n<p><strong><span style=\"color: #008080;\"><span style=\"color: #ff7b0f;\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mqde7m-2-1d0d03b8c5a91adbbb58737594839f97\">\n.av_font_icon.av-mqde7m-2-1d0d03b8c5a91adbbb58737594839f97{\ncolor:#08080;\nborder-color:#08080;\n}\n.av_font_icon.av-mqde7m-2-1d0d03b8c5a91adbbb58737594839f97 .av-icon-char{\nfont-size:25px;\nline-height:25px;\n}\n<\/style>\n<span  class='av_font_icon av-mqde7m-2-1d0d03b8c5a91adbbb58737594839f97 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='\ue885' data-av_iconfont='entypo-fontello' ><\/span><\/span>\u00a0<\/span><\/span><\/strong>On the other hand,<strong>the efficiency of optical conversion to terahertz <\/strong>is quite low, which is the main drawback preventing wider adoption of spintronic THz technology. It is typically of the order of\u00a0 10<sup>-5<\/sup>-10<sup>-6<\/sup> relative to the total input energy, which is at least one to two orders of magnitude lower than traditional optically pumped THz sources. STEs invariably require femtosecond lasers operating at average power levels of several watts. Improving their conversion efficiency is a critical step towards achieving competitiveness with conventional THz sources. In this context, <strong>researchers from the IEMN&rsquo;s PHOTONIQUE-THz and AIMAN-FILMS groups have been working in collaboration with the Technical University of Ostrava (VSB) on improving conversion efficiency using photonic structures<\/strong>.<\/p>\n<p><strong><span style=\"color: #008080;\"><span style=\"color: #ff7b0f;\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mqde7m-1-5bf4b92d725f0ce12367a228080846d8\">\n.av_font_icon.av-mqde7m-1-5bf4b92d725f0ce12367a228080846d8{\ncolor:#08080;\nborder-color:#08080;\n}\n.av_font_icon.av-mqde7m-1-5bf4b92d725f0ce12367a228080846d8 .av-icon-char{\nfont-size:25px;\nline-height:25px;\n}\n<\/style>\n<span  class='av_font_icon av-mqde7m-1-5bf4b92d725f0ce12367a228080846d8 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='\ue885' data-av_iconfont='entypo-fontello' ><\/span><\/span>\u00a0<\/span><\/span><\/strong>Fabry-P\u00e9rot <strong>integrated photonic cavities<\/strong> are composed of a stack of materials of different optical indices, such as silicon oxide and silicon nitride. In order to determine the thicknesses and number of stacks required, we have developed an electromagnetic theoretical framework that deals rigorously with the pulsed THz excitation and emission processes in spintronic emitters. This approach has enabled us to design an optimised photonic cavity that efficiently traps almost all the spectral power of the pump laser in the spin pumping magnetic layer. We opted for 1D\u00a0 1D SiO<sub>2<\/sub>\/SiN<sub>x<\/sub> distributed dielectric layer pairs <span style=\"text-decoration: underline;\"><em>(Figure b)<\/em><\/span>, as the resulting photonic crystal structure is only a few microns thick, which has minimal impact on the phase of the THz wavelengths generated and therefore hinders THz emission very little. The device was built in the IEMN&rsquo;s CMNF platform on a sapphire substrate. The emitter is a tri-layer W(2nm)\/FeCoB (1.8nm)\/Pt(2nm). <strong>Compared with the most powerful spintronic THz emitters, the cavity improves the emitted THz field by 250% <\/strong><span style=\"text-decoration: underline;\"><em>(figure c) <\/em><\/span>and, consequently, increases <strong>the emitted power<\/strong> by <strong>8 dB<\/strong>. In parallel, with researchers from the physics laboratory at ENS Paris, we are also working on <strong>a terahertz cavity that also amplifies the emitted signal<\/strong>. Currently under study, the combination of these two principles should enable spintronic transmitters to get closer to <strong>the symbolic milliWatt barrier<\/strong>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"section-elements\" style=\"text-align: left;\">\n<div id=\"person-1008\" class=\"field__item vcard node node--type-personne node--view-mode-block\"><\/div>\n<\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5j0kjb-17306f8ea16cf3d5f7572e4088a7d835\">\n@keyframes av_boxShadowEffect_av-5j0kjb-17306f8ea16cf3d5f7572e4088a7d835-column {\n0%   { box-shadow:  0 0 0 0 #cecece; opacity: 1; }\n100% { box-shadow:  0 0 20px 0 #cecece; opacity: 1; }\n}\n.flex_column.av-5j0kjb-17306f8ea16cf3d5f7572e4088a7d835{\nwidth:20.5%;\nmargin-left:6%;\nbox-shadow: 0 0 20px 0 #cecece;\nborder-radius:20px 20px 20px 20px;\npadding:15px 15px 15px 15px;\nbackground-color:#f2f2f2;\nbackground:linear-gradient( to top, #f2f2f2, #edd4aa, #ffffff );\n}\n.flex_column.av-5j0kjb-17306f8ea16cf3d5f7572e4088a7d835 .avia-divider-svg-top{\nborder-radius:20px 20px 0 0;\n}\n.flex_column.av-5j0kjb-17306f8ea16cf3d5f7572e4088a7d835 .avia-divider-svg-top svg{\nheight:25px;\nwidth:calc(100% + 1.3px);\nfill:#000000;\n}\n<\/style>\n<div  class='flex_column av-5j0kjb-17306f8ea16cf3d5f7572e4088a7d835 av_one_fourth  avia-builder-el-10  el_after_av_three_fourth  el_before_av_two_third  av-break-at-tablet flex_column_div shadow-not-animated  column-top-margin'     ><div class='avia-divider-svg avia-divider-svg-triangle avia-divider-svg-top avia-svg-original'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 1000 100\" preserveaspectratio=\"none\">\n\t<path d=\"M500,98.9L0,6.1V0h1000v6.1L500,98.9z\"\/>\n<\/svg><\/div><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6jduhqy-14f796ec1c2242936a1642046da33530\">\n#top .hr.hr-invisible.av-m6jduhqy-14f796ec1c2242936a1642046da33530{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-m6jduhqy-14f796ec1c2242936a1642046da33530 hr-invisible  avia-builder-el-11  el_before_av_textblock  avia-builder-el-first'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-10w0uzb-467469d8977281dc0c61b43d734db692\">\n#top .av_textblock_section.av-10w0uzb-467469d8977281dc0c61b43d734db692 .avia_textblock{\nfont-size:13px;\ntext-align:left;\n}\n<\/style>\n<section  class='av_textblock_section av-10w0uzb-467469d8977281dc0c61b43d734db692'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-72053\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-229x300.jpg\" alt=\"\" width=\"139\" height=\"182\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-229x300.jpg 229w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-785x1030.jpg 785w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-768x1008.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-1170x1536.jpg 1170w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-9x12.jpg 9w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-1143x1500.jpg 1143w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities-537x705.jpg 537w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2025\/01\/cover-APR-Pierre-STEcavities.jpg 1428w\" sizes=\"auto, (max-width: 139px) 100vw, 139px\" \/><\/a><\/p>\n<h5><strong><span style=\"text-decoration: underline;\">Articles<\/span>\u00a0<\/strong>:<\/h5>\n<p>Kolej\u00e1k, P., Lezier, G., Vala, D., Mathmann, B., Halaga\u010dka, L., Geln\u00e1rov\u00e1, Z., Dusch, Y., Lampin, J.-F., Tiercelin, N., Postava, K. and Vanwolleghem, M. (2024), <em>\u201cMaximizing the Electromagnetic Efficiency of Spintronic Terahertz Emitters<\/em>\u201d. Adv. Photonics Res., 5: 2400064.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1002\/adpr.202400064\" target=\"_blank\" rel=\"noopener\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rxos2f-a43ee39ef582cb7a1ecea8b3497148cb\">\n.av_font_icon.av-rxos2f-a43ee39ef582cb7a1ecea8b3497148cb{\ncolor:#ed9e17;\nborder-color:#ed9e17;\n}\n.av_font_icon.av-rxos2f-a43ee39ef582cb7a1ecea8b3497148cb .av-icon-char{\nfont-size:24px;\nline-height:24px;\n}\n<\/style>\n<span  class='av_font_icon av-rxos2f-a43ee39ef582cb7a1ecea8b3497148cb 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='\ue889' data-av_iconfont='entypo-fontello' ><\/span><\/span>https:\/\/doi.org\/10.1002\/adpr.202400064<\/a><\/p>\n<p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rxos2f-2-d9e274905dbe5d75b981ea6431116a61\">\n.av_font_icon.av-rxos2f-2-d9e274905dbe5d75b981ea6431116a61{\ncolor:#ed9e17;\nborder-color:#ed9e17;\n}\n.av_font_icon.av-rxos2f-2-d9e274905dbe5d75b981ea6431116a61 .av-icon-char{\nfont-size:24px;\nline-height:24px;\n}\n<\/style>\n<span  class='av_font_icon av-rxos2f-2-d9e274905dbe5d75b981ea6431116a61 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='\ue889' data-av_iconfont='entypo-fontello' ><\/span><\/span><a href=\"https:\/\/hal.science\/hal-04753321v1\" target=\"_blank\" rel=\"noopener\">https:\/\/hal.science\/hal-04753321v1<\/a><\/p>\n<p>Mi\u010dica, A. Wright, P. Kolej\u00e1k, G. Lezier, K. Postava, J. Hawecker, A. De Vetter, J. Tignon, J. Mangeney, H. Jaffres, R. Lebrun, N. Tiercelin, M. Vanwolleghem, and S. Dhillon, <em>\u201cSpintronic terahertz emitters with integrated metallic terahertz cavities\u201d.<\/em> Nanophotonics.<\/p>\n<p><a href=\"https:\/\/hal.science\/hal-04509627v1\" target=\"_blank\" rel=\"noopener\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c\">\n.av_font_icon.av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c{\ncolor:#ed9e17;\nborder-color:#ed9e17;\n}\n.av_font_icon.av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c .av-icon-char{\nfont-size:24px;\nline-height:24px;\n}\n<\/style>\n<span  class='av_font_icon av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c 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='\ue889' data-av_iconfont='entypo-fontello' ><\/span><\/span>https:\/\/doi.org\/10.1515\/nanoph-2023-0807<\/a><\/p>\n<p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c\">\n.av_font_icon.av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c{\ncolor:#ed9e17;\nborder-color:#ed9e17;\n}\n.av_font_icon.av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c .av-icon-char{\nfont-size:24px;\nline-height:24px;\n}\n<\/style>\n<span  class='av_font_icon av-rxos2f-1-7ab69883942dc5a41d8b100c7239619c 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='\ue889' data-av_iconfont='entypo-fontello' ><\/span><\/span> <a href=\"https:\/\/hal.science\/hal-04509627v1\" target=\"_blank\" rel=\"noopener\">https:\/\/hal.science\/hal-04509627v1<\/a><\/p>\n<hr \/>\n<p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rxos2f-1-1-dd52472cbb9018cbeaf968db3d8e0ebb\">\n.av_font_icon.av-rxos2f-1-1-dd52472cbb9018cbeaf968db3d8e0ebb{\ncolor:#ed9e17;\nborder-color:#ed9e17;\n}\n.av_font_icon.av-rxos2f-1-1-dd52472cbb9018cbeaf968db3d8e0ebb .av-icon-char{\nfont-size:24px;\nline-height:24px;\n}\n<\/style>\n<span  class='av_font_icon av-rxos2f-1-1-dd52472cbb9018cbeaf968db3d8e0ebb 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='\ue805' data-av_iconfont='entypo-fontello' ><\/span><\/span> <strong>Contact:<\/strong><\/p>\n<p><a href=\"mailto:Mathias.vanwolleghem@iemn.fr\" target=\"_blank\" rel=\"noopener\">Mathias Vanwolleghem<\/a><br \/>\n<a href=\"mailto:Nicolas.tiercelin@iemn.fr\" target=\"_blank\" rel=\"noopener\">Nicolas Tiercelin<\/a><\/p>\n<div class=\"section-elements\">\n<div id=\"person-1823\" class=\"field__item vcard node node--type-personne node--view-mode-block\">\n<div class=\"section-elements\">\n<div id=\"person-1008\" class=\"field__item vcard node node--type-personne node--view-mode-block\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-pnadxz-79a5356e461c81b91c276ec92ec199b6 av_two_third  avia-builder-el-18  el_after_av_one_fourth  avia-builder-el-last  first flex_column_div  column-top-margin'     ><section  class='av_textblock_section av-m0w1tcs2-24e2179493fa83b73db7bc6748d641d2'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-70206\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw.jpg\" alt=\"\" width=\"1200\" height=\"100\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw.jpg 1600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw-300x25.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw-1030x86.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw-768x64.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw-1536x129.jpg 1536w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw-18x2.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw-1500x126.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/09\/logos_eumw-705x59.jpg 705w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<\/div><\/section><\/div><\/p>","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":[297],"tags":[],"class_list":["post-72067","post","type-post","status-publish","format-standard","hentry","category-newsletter"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/72067","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=72067"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/72067\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=72067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=72067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=72067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}