{"id":3577,"date":"2016-12-10T09:00:29","date_gmt":"2016-12-10T08:00:29","guid":{"rendered":"https:\/\/elya.cz\/?post_type=realizace&#038;p=3577"},"modified":"2023-06-09T15:23:50","modified_gmt":"2023-06-09T13:23:50","slug":"telescope-demonstrator-for-femtosecond-laser-beam-transmission","status":"publish","type":"realizace","link":"https:\/\/elya.cz\/en\/case-studies\/telescope-demonstrator-for-femtosecond-laser-beam-transmission\/","title":{"rendered":"Telescope demonstrator for femtosecond laser beam transmission"},"content":{"rendered":"<section class=\"l-section wpb_row us_custom_bc7a158c height_custom with_img\"><div class=\"l-section-img\" role=\"img\" data-img-width=\"1500\" data-img-height=\"1000\" style=\"background-image: url(https:\/\/elya.cz\/wp-content\/uploads\/2021\/09\/004-e1631618035757.png);background-position: bottom center;\"><\/div><div class=\"l-section-overlay\" style=\"background:rgba(26,26,26,0.50)\"><\/div><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_flex valign_top type_default stacking_default\"><div class=\"vc_col-sm-10 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column us_custom_5fcb3cf2 underline--heading has_text_color\"><div class=\"wpb_wrapper\"><h2>Telescope demonstrator for femtosecond laser beam transmission<\/h2>\n<\/div><\/div><\/div><\/div><\/div><div class=\"vc_col-sm-2 wpb_column vc_column_container\"><div class=\"vc_column-inner us_custom_0bd7e7a8\"><div class=\"wpb_wrapper\"><time class=\"w-post-elm post_date us_custom_6df4bc3a has_text_color entry-date published\" datetime=\"2016-12-10T09:00:29+01:00\" itemprop=\"datePublished\"><i class=\"fal fa-calendar\"><\/i>December 10, 2016<\/time><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row height_custom\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_flex valign_top type_default stacking_default\"><div class=\"vc_col-sm-12 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h4 style=\"text-align: left;\">For the purpose of the ELI project, a&nbsp;demonstrator of mirror system for beam transfer, that is placed in vacuum, was designed and fabricated. The project included the design of optics, functional verification, design of the opto-mechanics and vacuum system, optics fabrication, opto-mechanics fabrication, vacuum system fabrication, and optical testing.<\/h4>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row height_custom\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_flex valign_top type_default stacking_default\"><div class=\"vc_col-sm-6 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left;\">Telescope demonstrator for femtosecond laser beam transmission<\/h3>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>As a&nbsp;part of the <a href=\"http:\/\/www.eli-beams.eu\/\">ELI<\/a> project was needed to transfer the femtosecond laser beams from the &#8220;laser&#8221; itself to the experimental halls, which included several challenges:<\/p>\n<ul>\n<li>It was necessary to transfer not only the intensity profile, but also the waveform (i.e. the divergence of the beams) has to be transferred over a&nbsp;distance of 20m.<\/li>\n<li>It was not possible to use a&nbsp;classical 4f lens arrangement, as the pulse is too short and the lenses would cause the pulse to broaden in time, and also too intense, and thus some of the energy absorbed in the lenses would be problematic.<\/li>\n<li>In addition, it was necessary to conduct the beam under vacuum (at least 1e-5 mbar, better at the focal points).<\/li>\n<li>The transmitted beam had to be a&nbsp;square shape with a&nbsp;side of 210 mm.<\/li>\n<\/ul>\n<p>Therefore, a&nbsp;solution using a&nbsp;suitable combination of mirrors instead of lenses has been proposed. The aim of the project was then to design the specific arrangement, mounting of the mirrors, optical benches, and vacuum chambers, and to fabricate and test these chambers and mirrors in visible light. <\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"vc_col-sm-6 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"252\" height=\"168\" src=\"https:\/\/elya.cz\/wp-content\/uploads\/2016\/12\/Obrazek10.png\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/elya.cz\/wp-content\/uploads\/2016\/12\/Obrazek10.png 252w, https:\/\/elya.cz\/wp-content\/uploads\/2016\/12\/Obrazek10-200x133.png 200w\" sizes=\"auto, (max-width: 252px) 100vw, 252px\" \/><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row us_custom_5cd26a65 height_custom\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_flex valign_top type_default stacking_default\"><div class=\"vc_col-sm-12 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h4>The project ultimately consisted of several phases, which can be summarised as follows:<\/h4>\n<ul>\n<li>Tests of the proposed optical layout were carried out on a&nbsp;scale model on an optical table. This verified the principle functionality, and we gained experience with the sensitivity of the proposed system and with its sensitivity not the accuracy of the setup.<\/li>\n<li>Subsequently, the mechanics, i.e., the methods of mounting the mirrors, as well as the vacuum chamber, its beam, the beams of the optical bench, etc., were designed.<\/li>\n<li>Subsequently, a&nbsp;set of chambers, mechanics and optics for a&nbsp;single telescope (i.e. two chambers) was fabricated first. Vacuum and optical tests were carried out on this first telescope.<\/li>\n<li>Based on the experience with the first set, the basis for the production of the second set was modified.<\/li>\n<\/ul>\n<div>Since the chambers of the final telescope will be mounted on the ceiling of the ELI building, they were made of aluminum alloy, which reduced the weight of the chambers (stainless steel would have about 50% more weight for the same strength) and despite the 1.2 meter inner diameter of the chambers, they can still be handled manually. The optical chambers were mounted on beams that allowed for attachment to the ceiling (or floor in the case of the tests), plus fine adjustment of its position after attachment, in 6 axes. Finally, an optical bench was created inside the optical chamber, which is attached to the ceiling independently of the chamber (it is only in contact with the chamber through the bellows) to minimize the transmission of vibrations of the vacuum system to the optical bench. Also, the optical bench allows for fine manipulation and position adjustment in 6 axes once attached. Custom mirror holders are then placed on the optical bench to allow motorized rotation of the mirrors along the 2 axes, plus additional manual alignment.<\/div>\n<div><\/div>\n<div>Optical tests were performed with beam diameters of approximately 80 mm and 200 mm. Intensity transfer tests were performed using several siemens stars (commercial and custom made 200 mm diameter). Wavefront measurements were performed using a&nbsp;variation of the Hartmann test.<\/div>\n<\/div><\/div><div class=\"w-btn-wrapper align_none\"><a class=\"w-btn us-btn-style_1\" title=\"Realizace\" href=\"https:\/\/elya.cz\/en\/case-studies\/\"><span class=\"w-btn-label\">Back<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row us_custom_5477629e dots-background--colored height_custom\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_flex valign_top type_default stacking_default\"><div class=\"vc_col-sm-12 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column us_custom_0091ca5b underline--heading has_text_color\"><div class=\"wpb_wrapper\"><h2>Other Case Studies<\/h2>\n<\/div><\/div><div class=\"w-grid us_custom_b51c0c2f type_grid layout_146 cols_3\" id=\"us_grid_1\" style=\"--columns:3;--gap:1rem;\" data-filterable=\"true\"><style>@media (max-width:1024px){#us_grid_1{--columns:2!important}}@media (max-width:600px){#us_grid_1{--columns:1!important}}.layout_146 .w-grid-item-h{}.layout_146 .usg_post_title_1{transition-duration:0.05s;transform-origin:50% 50%;transform:scale(1) translate(0%,0%)}.layout_146 .w-grid-item-h:hover .usg_post_title_1{transform:scale(1) translate(0%,0%);opacity:1;color:#89c449!important}.layout_146 .usg_post_image_1{margin-bottom:20px!important;position:static!important;padding:0!important}.layout_146 .usg_post_title_1{font-size:20px!important;font-weight:900!important;margin-bottom:15px!important;position:static!important}<\/style><div class=\"w-grid-list\">\t<article class=\"w-grid-item size_1x1 post-3974 realizace type-realizace status-publish has-post-thumbnail hentry category-automation tag-pharmaceutical\" data-id=\"3974\">\r\n\t\t<div class=\"w-grid-item-h\">\r\n\t\t\t\t\t\t<div class=\"w-post-elm post_image usg_post_image_1 stretched\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/optical-inspection-of-product-insertion-into-the-injection-moulding-machine\/\" aria-label=\"Optical inspection of product insertion into the injection moulding machine\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/elya.cz\/wp-content\/uploads\/2024\/06\/CS-Smit-Medical-5-300x200.png\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/elya.cz\/wp-content\/uploads\/2024\/06\/CS-Smit-Medical-5-300x200.png 300w, https:\/\/elya.cz\/wp-content\/uploads\/2024\/06\/CS-Smit-Medical-5-200x133.png 200w, https:\/\/elya.cz\/wp-content\/uploads\/2024\/06\/CS-Smit-Medical-5.png 446w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><h4 class=\"w-post-elm post_title usg_post_title_1 entry-title color_link_inherit\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/optical-inspection-of-product-insertion-into-the-injection-moulding-machine\/\">Optical inspection of product insertion into the injection moulding machine<\/a><\/h4><div class=\"w-post-elm post_custom_field usg_post_custom_field_1 type_text obsah color_link_inherit\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/optical-inspection-of-product-insertion-into-the-injection-moulding-machine\/\"><span class=\"w-post-elm-value\">We implemented a camera system, thanks to which we improved the traceability and control of processes in warehouse logistics, specifically in the area of \u200b\u200bdrug distribution to pharmacies.<\/span><\/a><\/div><div class=\"w-html usg_html_1\"><style>\n\th1::after{\n\t\tdisplay:none\n\t}\n<\/style><\/div>\t\t<\/div>\r\n\t\t\t<\/article>\r\n\t<article class=\"w-grid-item size_1x1 post-3950 realizace type-realizace status-publish has-post-thumbnail hentry category-automation tag-pharmaceutical\" data-id=\"3950\">\r\n\t\t<div class=\"w-grid-item-h\">\r\n\t\t\t\t\t\t<div class=\"w-post-elm post_image usg_post_image_1 stretched\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/camera-system-for-supporting-traceability-in-the-medical-sector\/\" aria-label=\"Camera system for supporting traceability in the medical sector\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Kamerovy-system-pro-podporu-traceability-v\u202fmedicinskem-odvetvi_2-300x200.png\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Kamerovy-system-pro-podporu-traceability-v\u202fmedicinskem-odvetvi_2-300x200.png 300w, https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Kamerovy-system-pro-podporu-traceability-v\u202fmedicinskem-odvetvi_2-200x133.png 200w, https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Kamerovy-system-pro-podporu-traceability-v\u202fmedicinskem-odvetvi_2.png 446w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><h4 class=\"w-post-elm post_title usg_post_title_1 entry-title color_link_inherit\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/camera-system-for-supporting-traceability-in-the-medical-sector\/\">Camera system for supporting traceability in the medical sector<\/a><\/h4><div class=\"w-post-elm post_custom_field usg_post_custom_field_1 type_text obsah color_link_inherit\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/camera-system-for-supporting-traceability-in-the-medical-sector\/\"><span class=\"w-post-elm-value\">Camera system that has improved traceability and process control in warehouse logistics, specifically in the area of drug distribution to pharmacies.<\/span><\/a><\/div><div class=\"w-html usg_html_1\"><style>\n\th1::after{\n\t\tdisplay:none\n\t}\n<\/style><\/div>\t\t<\/div>\r\n\t\t\t<\/article>\r\n\t<article class=\"w-grid-item size_1x1 post-3951 realizace type-realizace status-publish has-post-thumbnail hentry category-automation tag-automotive-en\" data-id=\"3951\">\r\n\t\t<div class=\"w-grid-item-h\">\r\n\t\t\t\t\t\t<div class=\"w-post-elm post_image usg_post_image_1 stretched\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/automation-of-wood-volume-measurement-using-deep-learning-ai\/\" aria-label=\"Automation of wood volume measurement using deep learning (AI)\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Wood-Paper-4-300x200.png\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Wood-Paper-4-300x200.png 300w, https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Wood-Paper-4-200x133.png 200w, https:\/\/elya.cz\/wp-content\/uploads\/2024\/05\/Wood-Paper-4.png 446w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><h4 class=\"w-post-elm post_title usg_post_title_1 entry-title color_link_inherit\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/automation-of-wood-volume-measurement-using-deep-learning-ai\/\">Automation of wood volume measurement using deep learning (AI)<\/a><\/h4><div class=\"w-post-elm post_custom_field usg_post_custom_field_1 type_text obsah color_link_inherit\"><a href=\"https:\/\/elya.cz\/en\/case-studies\/automation-of-wood-volume-measurement-using-deep-learning-ai\/\"><span class=\"w-post-elm-value\">The main goal of the implementation was to achieve full automation of the wood volume measurement process on trucks by deep learning.<\/span><\/a><\/div><div class=\"w-html usg_html_1\"><style>\n\th1::after{\n\t\tdisplay:none\n\t}\n<\/style><\/div>\t\t<\/div>\r\n\t\t\t<\/article>\r\n<\/div><div class=\"w-grid-preloader\">\t<div class=\"g-preloader type_1\">\r\n\t\t<div><\/div>\r\n\t<\/div>\r\n\t<\/div>\t<div class=\"w-grid-json hidden\" onclick='return {&quot;action&quot;:&quot;us_ajax_grid&quot;,&quot;infinite_scroll&quot;:0,&quot;max_num_pages&quot;:7,&quot;pagination&quot;:&quot;none&quot;,&quot;template_vars&quot;:{&quot;columns&quot;:&quot;3&quot;,&quot;exclude_items&quot;:&quot;none&quot;,&quot;img_size&quot;:&quot;default&quot;,&quot;ignore_items_size&quot;:0,&quot;items_layout&quot;:&quot;146&quot;,&quot;items_offset&quot;:&quot;1&quot;,&quot;load_animation&quot;:&quot;none&quot;,&quot;overriding_link&quot;:&quot;{\\&quot;url\\&quot;:\\&quot;\\&quot;}&quot;,&quot;post_id&quot;:0,&quot;query_args&quot;:{&quot;post_type&quot;:[&quot;realizace&quot;],&quot;tax_query&quot;:[{&quot;taxonomy&quot;:&quot;post_tag&quot;,&quot;field&quot;:&quot;slug&quot;,&quot;terms&quot;:[&quot;aerospace&quot;,&quot;automotive-en&quot;,&quot;pharmaceutical&quot;,&quot;plastics&quot;,&quot;science&quot;,&quot;space&quot;]}],&quot;post_status&quot;:[&quot;publish&quot;,&quot;acf-disabled&quot;],&quot;posts_per_page&quot;:&quot;3&quot;},&quot;orderby_query_args&quot;:{&quot;orderby&quot;:{&quot;date&quot;:&quot;DESC&quot;}},&quot;type&quot;:&quot;grid&quot;,&quot;us_grid_post_type&quot;:&quot;realizace&quot;,&quot;us_grid_ajax_index&quot;:1,&quot;us_grid_filter_query_string&quot;:null,&quot;us_grid_index&quot;:1,&quot;page_args&quot;:[],&quot;lang&quot;:&quot;en&quot;}}'><\/div>\r\n\t<\/div><div class=\"w-btn-wrapper align_center\"><a class=\"w-btn us-btn-style_1 us_custom_b2452879\" title=\"Novinky\" href=\"https:\/\/elya.cz\/en\/case-studies\/\"><span class=\"w-btn-label\">All Case Studies<\/span><\/a><\/div><div class=\"w-image cary align_none\" id=\"cary\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"294\" height=\"229\" src=\"https:\/\/elya.cz\/wp-content\/uploads\/2021\/08\/Cary.png\" class=\"attachment-full size-full\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/elya.cz\/wp-content\/uploads\/2021\/08\/Cary.png 294w, https:\/\/elya.cz\/wp-content\/uploads\/2021\/08\/Cary-193x150.png 193w\" sizes=\"auto, (max-width: 294px) 100vw, 294px\" 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