{"id":680,"date":"2026-02-04T15:26:04","date_gmt":"2026-02-04T15:26:04","guid":{"rendered":"https:\/\/wp.icmm.csic.es\/realm\/?p=680"},"modified":"2026-02-04T15:26:04","modified_gmt":"2026-02-04T15:26:04","slug":"optical-waveguides-created-by-high-energy-o-or-f-irradiation-of-ybca3nbga5o12-type-disordered-laser-single-crystals","status":"publish","type":"post","link":"https:\/\/wp.icmm.csic.es\/realm\/2026\/02\/04\/optical-waveguides-created-by-high-energy-o-or-f-irradiation-of-ybca3nbga5o12-type-disordered-laser-single-crystals\/","title":{"rendered":"Optical waveguides created by high energy O or F irradiation of Yb:Ca3(NbGa)5O12-type disordered laser single crystals"},"content":{"rendered":"<p>Lanthanide-doped Ca<sub>3<\/sub>(NbGa)<sub>5<\/sub>O<sub>12<\/sub>-type disordered single crystals are promising media for high power lasers with ultrashort pulse durations. In this work, planar optical waveguides in lithium-modified Yb:Ca<sub>3<\/sub>(NbGa)<sub>5<\/sub>O<sub>12 <\/sub>single crystals have been fabricated by O or F room temperature irradiation using 20 MeV of energy and a fluence of 1\u00d710<sup>15<\/sup> at\/cm<sup>2<\/sup>. The produced waveguides show 7 dark modes\u00a0 in the O\u00a0 case and 6 dark modes in the F one, monitored at \u03bb= 632.8 nm. Light confinement is induced by a \u2248 4% drop of the refractive index at \u2248 4-4.5 \u00b5m of depth which is primary associated to electronic damage for both irradiations. The irradiation induces some crystal coloration that is largely eliminated by air annealing in the 150-300 \u00baC temperature range. A post implantation thermal annealing reduces the waveguide propagation losses at \u03bb= 632.8 nm of F-implanted samples up to 1.8 dB\/cm.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-682\" src=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2026\/02\/IMG_2269-5Yb-250225-200x300.jpg\" alt=\"\" width=\"200\" height=\"300\" srcset=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2026\/02\/IMG_2269-5Yb-250225-200x300.jpg 200w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2026\/02\/IMG_2269-5Yb-250225-683x1024.jpg 683w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2026\/02\/IMG_2269-5Yb-250225-768x1152.jpg 768w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2026\/02\/IMG_2269-5Yb-250225-1024x1536.jpg 1024w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2026\/02\/IMG_2269-5Yb-250225-1365x2048.jpg 1365w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2026\/02\/IMG_2269-5Yb-250225-scaled.jpg 1707w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-557\" src=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/Logo-PDC-300x70.jpg\" alt=\"\" width=\"300\" height=\"70\" srcset=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/Logo-PDC-300x70.jpg 300w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/Logo-PDC-1024x239.jpg 1024w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/Logo-PDC-768x179.jpg 768w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/Logo-PDC.jpg 1079w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lanthanide-doped Ca3(NbGa)5O12-type disordered single crystals are promising media for high power lasers with ultrashort pulse durations. In this work, planar optical waveguides in lithium-modified Yb:Ca3(NbGa)5O12 single crystals have been fabricated by O or F room temperature irradiation using 20 MeV of energy and a fluence of 1\u00d71015 at\/cm2. The produced waveguides show 7 dark modes\u00a0 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/wp.icmm.csic.es\/realm\/2026\/02\/04\/optical-waveguides-created-by-high-energy-o-or-f-irradiation-of-ybca3nbga5o12-type-disordered-laser-single-crystals\/\" class=\"more-link\">Continuar leyendo<span class=\"screen-reader-text\"> \u00abOptical waveguides created by high energy O or F irradiation of Yb:Ca3(NbGa)5O12-type disordered laser single crystals\u00bb<\/span><\/a><\/p>\n","protected":false},"author":51,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-680","post","type-post","status-publish","format-standard","hentry","category-sin-categoria"],"_links":{"self":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts\/680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/users\/51"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/comments?post=680"}],"version-history":[{"count":1,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts\/680\/revisions"}],"predecessor-version":[{"id":683,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts\/680\/revisions\/683"}],"wp:attachment":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/media?parent=680"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/categories?post=680"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/tags?post=680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}