{"id":36960,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-teorico-y-experimental-de-los-efectos-de-captura-y-escape-de-portadores-en-laseres-de-pozo-cuantico\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"analisis-teorico-y-experimental-de-los-efectos-de-captura-y-escape-de-portadores-en-laseres-de-pozo-cuantico","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-tecnologicas\/analisis-teorico-y-experimental-de-los-efectos-de-captura-y-escape-de-portadores-en-laseres-de-pozo-cuantico\/","title":{"rendered":"Analisis teorico y experimental de los efectos de captura y escape de portadores en laseres de pozo cuantico."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Beatriz Romero Herrero <\/strong><\/h2>\n<p>En esta memoria se presentan medidas experimentales de impedancia y respuesta en modulaci\u00f3n en peque\u00f1a se\u00f1al de l\u00e1seres de semiconductor de pozo cu\u00e1ntico basados en gaas. A partir de las medidas de impedancia por debajo de umbral se ha extra\u00eddo informaci\u00f3n de par\u00e1metros tales como la resistencia din\u00e1mica diferencial del diodo, el tiempo efectivo de recombinaci\u00f3n de portadores en el pozo, el tiempo de escape y\/o el tiempo de captura de los portadores en los pozos cu\u00e1nticos. Se han analizado diferentes muestras variando determinados par\u00e1metros estructurales tales como la composici\u00f3n de indio en el pozo, el nivel de dopado en la zona activa, las dimensiones de los dispositivos, etc., As\u00ed como con el nivel de inyecci\u00f3n de corriente y la temperatura.  asimismo se ha desarrollado un modelo te\u00f3rico simple para calcular el tiempo de escape de los portadores en este tipo de l\u00e1seres. Este modelo usa estad\u00edstica de fermi-dirac y tiene en cuenta fen\u00f3menos de segundo orden, tales como la renormalizaci\u00f3n de la banda prohibida y la curvatura de bandas. Este modelo se ha cotejado con otros modelos ya existentes (emisi\u00f3n termoi\u00f3nica y teor\u00eda de interacci\u00f3n con fonones longitudinales-\u00f3pticos).  finalmente se han comparado los resultados experimentales sobre el tiempo de escape obtenidos en las diferentes muestras con los resultados te\u00f3ricos calculados con el modelo citado anteriormente.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Analisis teorico y experimental de los efectos de captura y escape de portadores en laseres de pozo cuantico.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Analisis teorico y experimental de los efectos de captura y escape de portadores en laseres de pozo cuantico. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Beatriz Romero Herrero <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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>Ignacio Esquivias Moscardo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 Antonio Martin Pereda <\/li>\n<li>Luis Pesquera Gonzalez (vocal)<\/li>\n<li> Sanchez Rojas Jos\u00e9 Luis (vocal)<\/li>\n<li>Josef Rosenzweig (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Beatriz Romero Herrero En esta memoria se presentan medidas experimentales de impedancia y respuesta en modulaci\u00f3n en [&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 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