{"id":163388,"date":"2021-10-26T08:51:17","date_gmt":"2021-10-26T08:51:17","guid":{"rendered":"\/forum\/forums\/topic\/farfield-calculation-of-lumerical\/"},"modified":"2021-10-26T14:29:17","modified_gmt":"2021-10-26T14:29:17","slug":"farfield-calculation-of-lumerical","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/farfield-calculation-of-lumerical\/","title":{"rendered":"Farfield calculation of Lumerical"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello,<\/p>\n<p>I am trying to understand exactly what the farfield functions from lumerical compute from the monitor in the near field. <\/p>\n<p>Is it computing the Fourier Transformation of the harmonic components of the recorded fields or are they computed differently? I am unsure since the Fraunhofer approximation should only apply if either the source or the field in the distance is a plane wave which is not true in my case. <\/p>\n<p>Finally, I would like to invert the farfield function such that I can compute the near field from a given electric field in the farfield or (if that&#039;s possible) from the farfield intensity. How would I do that?<\/p>\n<p>I would kindly appreciate any information or literature hints on my question!<\/p>\n<p>Regards<\/p>\n","protected":false},"template":"","class_list":["post-163388","topic","type-topic","status-closed","hentry","topic-tag-farfield-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["982"],"_bbp_likes_count":["0"],"_bbp_subscription":["236810"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["163388"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","236810"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["195774"],"_bbp_last_active_id":["195774"],"_bbp_last_active_time":["2021-10-26 14:29:17"]},"test":"alexander-luceosram-os-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/163388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/163388\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=163388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}