{"id":24633,"date":"2003-11-07T00:00:00","date_gmt":"2003-11-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/espectroscopa%c2%ada-de-iones-luminiscentes-en-materiales-vitroceramicos-para-aplicaciones-laseres\/"},"modified":"2003-11-07T00:00:00","modified_gmt":"2003-11-07T00:00:00","slug":"espectroscopa%c2%ada-de-iones-luminiscentes-en-materiales-vitroceramicos-para-aplicaciones-laseres","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/la-laguna\/espectroscopa%c2%ada-de-iones-luminiscentes-en-materiales-vitroceramicos-para-aplicaciones-laseres\/","title":{"rendered":"Espectroscop\u00edade iones luminiscentes en materiales vitrocer\u00e1micos para aplicaciones l\u00e1seres"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jorge M\u00e9ndez Ramos <\/strong><\/h2>\n<p>Se ha realizado un estudio de las propiedades \u00f3pticas de iones luminiscentes de tierras raras en vidrios y vitrocer\u00e1micos de oxifluoruros transparentes. se han elaborado vidrios de oxifluoruros dopados con diferentes concentraciones de iones \u00f3pticamente activos: er3+, eu3+, tm3+, yb3+ y nd3+. Tras un tratamiento t\u00e9rmico pr\u00f3ximo a la temperatura de cristalizaci\u00f3n, determinada por an\u00e1lisis t\u00e9rmico diferencial, se han obtenido vitrocer\u00e1micos transparentes a partir de los vidrios precursores, en los cuales, nanocristales de fluoruros quedan inmersos en una matriz v\u00edtrea de \u00f3xidos.  se ha realizado una caracterizaci\u00f3n espectrosc\u00f3pica de vidrios y vitrocer\u00e1micos de oxifluoruro dopados con iones er3+ en el marco te\u00f3rico de judd-ofelt. se observan cambios importantes debidos al proceso de desvitrificaci\u00f3n, indicando que los iones de tierras raras han entrado en la fase cristalina precipitada tras el tratamiento t\u00e9rmico. Se han obtenido emisiones visibles de \u00abupconversi\u00f3n\u00bb (conversi\u00f3n de energ\u00eda infrarroja a visible) bajo excitaci\u00f3n infrarroja en 975 nm. Se ha llevado a cabo una caracterizaci\u00f3n, desde el punto de vista estructural y de la distribuci\u00f3n de entornos, de los iones en estos vidrios y vitrocer\u00e1micos de oxifluoruro transparentes dopados con eu3+, conocidas las propiedades de dicho ion como sonda de la estructura local. Se presentan resultados para varios niveles de concentraci\u00f3n de dopante (0.1, 1 y 2.5 mol% de iones eu3+).  se ha obtenido una estructura \u00abpatr\u00f3n\u00bb, para los entornos del ion eu3+ en el vitrocer\u00e1mico de oxifluoruro dopado con 2.5 mol% de eu3+, dada por la fase cristalina euf3, que act\u00faa como agente nucleante heterog\u00e9neo para la posterior precipitaci\u00f3n de nanocristales de beta-pbf2. Sin embargo, en los vitrocer\u00e1micos dopados con 0.1 mol% de eu3+, las medidas espectrosc\u00f3picas indican que los iones eu3+ quedan diluidos sin producirse fen\u00f3menos de \u00abclustering\u00bb, en la fase cristalina de fluoruro<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Espectroscop\u00edade iones luminiscentes en materiales vitrocer\u00e1micos para aplicaciones l\u00e1seres<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Espectroscop\u00edade iones luminiscentes en materiales vitrocer\u00e1micos para aplicaciones l\u00e1seres <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jorge M\u00e9ndez Ramos <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 La laguna<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 11\/07\/2003<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li> Rodr\u00edguez Armas Vicente D.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco Mauricio dom\u00ednguez <\/li>\n<li> Peraza hern\u00e1ndez Jos\u00e9 Fernando (vocal)<\/li>\n<li>joaquin m. Fernandez rodriguez (vocal)<\/li>\n<li>Jos\u00e9 Garc\u00eda sol\u00e9 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jorge M\u00e9ndez Ramos Se ha realizado un estudio de las propiedades \u00f3pticas de iones luminiscentes de tierras [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[9915],"tags":[34898,28193,72252,30071,10429,72253],"class_list":["post-24633","post","type-post","status-publish","format-standard","hentry","category-la-laguna","tag-francisco-mauricio-dominguez","tag-joaquin-m-fernandez-rodriguez","tag-jorge-mendez-ramos","tag-jose-garcia-sole","tag-peraza-hernandez-jose-fernando","tag-rodriguez-armas-vicente-d"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/24633","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=24633"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/24633\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=24633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=24633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=24633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}