{"id":2570,"date":"2025-09-05T18:55:41","date_gmt":"2025-09-05T18:55:41","guid":{"rendered":"https:\/\/creol.ucf.edu\/lpl\/?page_id=2570"},"modified":"2025-09-05T19:38:33","modified_gmt":"2025-09-05T19:38:33","slug":"isteffac","status":"publish","type":"page","link":"https:\/\/creol.ucf.edu\/lpl\/facilities\/isteffac\/","title":{"rendered":"2um Laser Propagation Facility"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2570\" class=\"elementor elementor-2570\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-61a4b92 e-con-full e-flex e-con e-parent\" data-id=\"61a4b92\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-bef5e88 e-con-full e-flex e-con e-child\" data-id=\"bef5e88\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5a08d10 elementor-widget elementor-widget-spacer\" data-id=\"5a08d10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-40f856e e-flex e-con-boxed e-con e-parent\" data-id=\"40f856e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-04e5585 e-con-full e-flex e-con e-child\" data-id=\"04e5585\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3e94c7f elementor-nav-menu__align-center elementor-nav-menu--dropdown-tablet elementor-nav-menu__text-align-aside elementor-nav-menu--toggle elementor-nav-menu--burger elementor-widget elementor-widget-nav-menu\" data-id=\"3e94c7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;horizontal&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i class=\\&quot;fas fa-caret-down\\&quot; aria-hidden=\\&quot;true\\&quot;&gt;&lt;\\\/i&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;},&quot;toggle&quot;:&quot;burger&quot;}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<nav aria-label=\"Menu\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-horizontal e--pointer-none\">\n\t\t\t\t<ul id=\"menu-1-3e94c7f\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-home menu-item-2031\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/\" class=\"elementor-item\">Home<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2102\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/dr-richardson\/\" class=\"elementor-item\">Dr. Richardson<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1266\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/people\/\" class=\"elementor-item\">People<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1265\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/research\/\" class=\"elementor-item\">Research<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2565\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/\" class=\"elementor-item\">Facilities<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1292\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/publications\/\" class=\"elementor-item\">Publications<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2852\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/programs\/\" class=\"elementor-item\">Programs<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2851\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/courses\/\" class=\"elementor-item\">Courses<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t<div class=\"elementor-menu-toggle\" role=\"button\" tabindex=\"0\" aria-label=\"Menu Toggle\" aria-expanded=\"false\">\n\t\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"elementor-menu-toggle__icon--open eicon-menu-bar\"><\/i><i aria-hidden=\"true\" role=\"presentation\" class=\"elementor-menu-toggle__icon--close eicon-close\"><\/i>\t\t<\/div>\n\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-3e94c7f\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-home menu-item-2031\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/\" class=\"elementor-item\" tabindex=\"-1\">Home<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2102\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/dr-richardson\/\" class=\"elementor-item\" tabindex=\"-1\">Dr. Richardson<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1266\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/people\/\" class=\"elementor-item\" tabindex=\"-1\">People<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1265\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/research\/\" class=\"elementor-item\" tabindex=\"-1\">Research<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2565\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/\" class=\"elementor-item\" tabindex=\"-1\">Facilities<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1292\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/publications\/\" class=\"elementor-item\" tabindex=\"-1\">Publications<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2852\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/programs\/\" class=\"elementor-item\" tabindex=\"-1\">Programs<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2851\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/courses\/\" class=\"elementor-item\" tabindex=\"-1\">Courses<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c78d2f0 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"c78d2f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0457c1f elementor-nav-menu__align-center elementor-nav-menu__text-align-center elementor-nav-menu--dropdown-tablet elementor-widget elementor-widget-nav-menu\" data-id=\"0457c1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;horizontal&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i class=\\&quot;fas fa-caret-down\\&quot; aria-hidden=\\&quot;true\\&quot;&gt;&lt;\\\/i&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;}}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<nav aria-label=\"Menu\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-horizontal e--pointer-none\">\n\t\t\t\t<ul id=\"menu-1-0457c1f\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2653\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/hiceps\/\" class=\"elementor-item\">HERACLES<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2652\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/hifl\/\" class=\"elementor-item\">HIFL<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2651\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/isteffac\/\" class=\"elementor-item\">2um Laser Propagation<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2650\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/imra\/\" class=\"elementor-item\">IMRA Partnership<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2649\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/khz\/\" class=\"elementor-item\">Khz Femtosecond Laser<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2648\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/fiber-processing\/\" class=\"elementor-item\">Fiber Processing<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2647\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/thermal-lensing\/\" class=\"elementor-item\">Thermal Lensing<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-0457c1f\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2653\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/hiceps\/\" class=\"elementor-item\" tabindex=\"-1\">HERACLES<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2652\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/hifl\/\" class=\"elementor-item\" tabindex=\"-1\">HIFL<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2651\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/isteffac\/\" class=\"elementor-item\" tabindex=\"-1\">2um Laser Propagation<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2650\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/imra\/\" class=\"elementor-item\" tabindex=\"-1\">IMRA Partnership<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2649\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/khz\/\" class=\"elementor-item\" tabindex=\"-1\">Khz Femtosecond Laser<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2648\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/fiber-processing\/\" class=\"elementor-item\" tabindex=\"-1\">Fiber Processing<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2647\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/facilities\/thermal-lensing\/\" class=\"elementor-item\" tabindex=\"-1\">Thermal Lensing<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0c8f63e e-flex e-con-boxed e-con e-parent\" data-id=\"0c8f63e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-a5b8baa e-con-full e-flex e-con e-child\" data-id=\"a5b8baa\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-df737f4 elementor-widget elementor-widget-heading\" data-id=\"df737f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">2um Laser Propagation Facility<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b87c889 e-con-full e-flex e-con e-child\" data-id=\"b87c889\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9fbfbdb elementor-widget elementor-widget-image\" data-id=\"9fbfbdb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"220\" height=\"132\" src=\"https:\/\/creol.ucf.edu\/lpl\/wp-content\/uploads\/sites\/87\/2025\/09\/2um.jpg\" class=\"attachment-medium size-medium wp-image-2553\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3fa7c11 e-con-full e-flex e-con e-child\" data-id=\"3fa7c11\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1a6b5c9 elementor-widget elementor-widget-text-editor\" data-id=\"1a6b5c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"maincontent\"><div class=\"maincontent\"><p>One of the most attractive properties of thulium as a fiber laser dopant, relative to more established ytterbium and erbium hosts, is the extremely wide wavelength range of laser output from ~1.8 ? 2.1 ?m. This ?eye safe? wavelength range is interesting for a variety of reasons and potential applications.<\/p><p>For example:<\/p><ul><li>There are several regions of very low atmospheric absorption within the wavelength range of Tm:fiber, well-suited for long-range propagation for applications such as LIDAR or directed energy.<\/li><li>Vibrationally resonant absorptions from trace water vapor and CO2 occur within the emission band of Tm:fiber, making this a useful band for trace gas analysis.<\/li><li>The wide laser tunability range is sufficient to enable the amplification of 100 fs pulses to high peak powers using all-fiber architecture.<\/li><\/ul><p>For all of these cases, it is necessary to characterize the propagation of Tm:fiber emission. Towards this goal, we have conducted 1 km laser range experiments using a tunable Tm:fiber MOPA system producing &gt;200 W output power with narrow linewidth (&lt;200 pm) from ~1.94 ? 2.1 ?m at the Innovative Science &amp; Technology Facility (ISTEF) in Merritt Island Florida. By tuning the laser wavelength, we measured the relative transmission over the 1-km range and compared it with MODTRAN simulation. These measurements confirm that there atmospheric transmission windows from 2.03 ? 2.05 ?m and for wavelengths &gt;2.07 ?m.<\/p><p>We have also conducted short range transmission measurements using broadband Tm:fiber sources for illumination and our Yokogawa AQ6375 Optical Spectrum Analyizer for data collection. This provides us with a diagnostic with &lt;50 pm spectral resolution and high dynamic range. This diagnostic is capable of detecting CO2 absorption features after ~2 m propagation in air, despite the low ~0.04% percentage of atmospheric CO2.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"2um Laser Propagation Facility One of the most attractive properties of thulium as a fiber laser dopant, relative to more established ytterbium and erbium hosts, is the extremely wide wavelength range of laser output from ~1.8 ? 2.1 ?m. This ?eye safe? wavelength range is interesting for a variety of reasons and potential applications. For&hellip;","protected":false},"author":1,"featured_media":0,"parent":2550,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-2570","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/comments?post=2570"}],"version-history":[{"count":10,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2570\/revisions"}],"predecessor-version":[{"id":2665,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2570\/revisions\/2665"}],"up":[{"embeddable":true,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2550"}],"wp:attachment":[{"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/media?parent=2570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}