{"id":2299,"date":"2025-09-04T18:52:34","date_gmt":"2025-09-04T18:52:34","guid":{"rendered":"https:\/\/creol.ucf.edu\/lpl\/?page_id=2299"},"modified":"2025-09-04T19:47:40","modified_gmt":"2025-09-04T19:47:40","slug":"qswitch","status":"publish","type":"page","link":"https:\/\/creol.ucf.edu\/lpl\/thuliumlaserdev\/qswitch\/","title":{"rendered":"Q-switched Tm3+-doped fiber laser"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2299\" class=\"elementor elementor-2299\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-17ab9815 e-con-full e-flex e-con e-parent\" data-id=\"17ab9815\" 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-6958f44d elementor-widget elementor-widget-spacer\" data-id=\"6958f44d\" data-element_type=\"widget\" data-e-type=\"widget\" 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menu-item-object-page menu-item-2223\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/thuliumlaserdev\/\" class=\"elementor-item\">Fiber Laser<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2272\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/laser-filamentation\/\" class=\"elementor-item\">Laser Filamentation<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2228\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/opcpalaserdev\/\" class=\"elementor-item\">Ultrafast Laser<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2226\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/spectroscopy\/\" class=\"elementor-item\">Spectroscopy and Sensing<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2227\"><a href=\"https:\/\/creol.ucf.edu\/lpl\/solid-state\/\" class=\"elementor-item\">Solid State Laser<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<nav 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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<h3 class=\"elementor-heading-title elementor-size-default\">Laser Materials Processing<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7566070 elementor-widget elementor-widget-text-editor\" data-id=\"7566070\" 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<p>Q-switched Tm3+-doped fiber laser<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f913076 elementor-widget elementor-widget-image\" data-id=\"f913076\" 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=\"250\" height=\"150\" src=\"https:\/\/creol.ucf.edu\/lpl\/wp-content\/uploads\/sites\/87\/2025\/09\/V-qswitch1.jpg\" class=\"attachment-medium size-medium wp-image-2190\" 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 class=\"elementor-element elementor-element-17ca5d3 elementor-widget elementor-widget-image\" data-id=\"17ca5d3\" 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=\"250\" height=\"69\" src=\"https:\/\/creol.ucf.edu\/lpl\/wp-content\/uploads\/sites\/87\/2025\/09\/V-qswitch2.jpg\" class=\"attachment-medium size-medium wp-image-2191\" 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<div class=\"elementor-element elementor-element-3a33f9a e-con-full e-flex e-con e-child\" data-id=\"3a33f9a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa1259a elementor-widget elementor-widget-text-editor\" data-id=\"fa1259a\" 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=\"programbis\"><div class=\"maincontent\"><p>Experiments are being performed with a high-energy Q-switched Tm3+-doped polarization maintaining silica fiber laser operating in the 2 \u00ce\u00bcm regime. The laser generates pulse energies &gt;350 \u00ce\u00bcJ with 115 ns pulse duration at 20 kHz. Feedback elements used with this laser include a high reflectivity mirror, a reflection grating and a volume Bragg grating (VBG). The reflection grating allows approximately 100 nm of spectral tunability and both the reflection grating and the VBG can produce laser output with sub-nanometer spectral width. Lasers of this type are used for a variety of applications including LIDAR, atmospheric propagation, and optical countermeasures. Current applications of the Q-switched system include material machining and laser induced breakdown spectroscopy (LIBS).<\/p><p>The laser system itself is comprised of Tm3+-doped PM silica fiber. The fiber is water cooled in order to maintain efficiency at higher power levels. The system is pumped by with a 790 nm fiber-coupled pump diode. Intra-cavity polarization elements ensure single-polarization lasing and match the polarization to the stress rods in the PM fiber. Q-switching is accomplished using an acousto-optic modulator.<\/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<\/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":"Laser Materials Processing Q-switched Tm3+-doped fiber laser Experiments are being performed with a high-energy Q-switched Tm3+-doped polarization maintaining silica fiber laser operating in the 2 \u00ce\u00bcm regime. The laser generates pulse energies &gt;350 \u00ce\u00bcJ with 115 ns pulse duration at 20 kHz. Feedback elements used with this laser include a high reflectivity mirror, a reflection&hellip;","protected":false},"author":1,"featured_media":0,"parent":2205,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-2299","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2299","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=2299"}],"version-history":[{"count":7,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2299\/revisions"}],"predecessor-version":[{"id":2442,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2299\/revisions\/2442"}],"up":[{"embeddable":true,"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/pages\/2205"}],"wp:attachment":[{"href":"https:\/\/creol.ucf.edu\/lpl\/wp-json\/wp\/v2\/media?parent=2299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}