{"id":349,"date":"2019-07-09T10:21:37","date_gmt":"2019-07-09T10:21:37","guid":{"rendered":"http:\/\/vdraz.lumn.eu\/wordpress\/?page_id=349"},"modified":"2025-12-06T22:20:33","modified_gmt":"2025-12-06T22:20:33","slug":"critical-height","status":"publish","type":"page","link":"https:\/\/vdraz.lumn.eu\/wordpress\/critical-height\/","title":{"rendered":"Influence of an edge height on the diffracted EM field distribution"},"content":{"rendered":"<pre><span class=\"fontstyle0\">The diffraction of light from a right-angled, lossless dielectric step, illuminated by a plane wave, forms a tilted focused beam. Its deviation angle depends on the index ratio between the structure material and host medium. This paper will demonstrate the existence of a critical height of a wavelength sized edge. This edge diffracts the incident light energy inside the higher index medium, as a specific field distribution. The analysis, done for optical frequencies, identifies lobes in the resulting field distribution. The lobes repartition is driven by a critical height and its multiples. These EM patterns are evaluated in relation with the photonic nanojet phenomenon.<\/span><\/pre>\n<p>&#8220;<em>Influence of an edge height on the diffracted EM field distribution<\/em>&#8220;, Bobin Varghese, Oksana Shramkova, Valter Drazic, Val\u00e9rie Alli\u00e9, Laurent Blond\u00e9*, International Conference on Transparent Optical Networks, 9-13 July 2019, Angers, France.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>The diffraction of light from a right-angled, lossless dielectric step, illuminated by a plane wave, forms a tilted focused beam. Its deviation angle depends on the index ratio between the structure material and host medium. This paper will demonstrate the existence of a critical height of a wavelength sized edge. This edge diffracts the incident &hellip; <a href=\"https:\/\/vdraz.lumn.eu\/wordpress\/critical-height\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Influence of an edge height on the diffracted EM field distribution<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":347,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[10],"tags":[68,49,50,51,48],"class_list":["post-349","page","type-page","status-publish","has-post-thumbnail","hentry","category-conference","tag-critical-height","tag-edge-diffraction","tag-microlens","tag-near-field-focusing","tag-photonic-nanojet"],"_links":{"self":[{"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/pages\/349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/comments?post=349"}],"version-history":[{"count":2,"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/pages\/349\/revisions"}],"predecessor-version":[{"id":737,"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/pages\/349\/revisions\/737"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/media\/347"}],"wp:attachment":[{"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/media?parent=349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/categories?post=349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vdraz.lumn.eu\/wordpress\/wp-json\/wp\/v2\/tags?post=349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}