{"id":374806,"date":"2024-08-02T04:52:31","date_gmt":"2024-08-02T04:52:31","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/374806\/"},"modified":"2024-08-02T04:52:31","modified_gmt":"2024-08-02T04:52:31","slug":"374806","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/374806\/","title":{"rendered":"Reply To: scattering calculation with gaussian beam in FDTD"},"content":{"rendered":"<p>&lt;p&gt;i see. i have a few more questions.&lt;\/p&gt;&lt;p&gt;for a gaussian source, is sourceintensity the intensity at the where it is injected?&nbsp;&lt;\/p&gt;&lt;p&gt;when injecting a gaussian source (use thin lens), there seems to be some artifacts near the plane of injection? attached is a pic of the beam&#8217;s cross sec; there&#8217;s nothing else in the model. why are there wrinkles? also, in general, how far should the injection plane be from the scatter? i&#8217;m putting it below the scatter.&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/02-08-2024-1722573558-NA0-22_dis2focus_-4um.png\" alt=\"\" width=\"540\" height=\"373\" \/>&lt;\/p&gt;&lt;p&gt;what is &#8216;power&#8217; in the rawdata of a cross sec analysis group? why is it a complex number?&lt;\/p&gt;&lt;p&gt;I&#8217;m still having trouble setting up high-NA gaussian beams. for NA~1, my E field&#8217;s z- cross sec&#8217;s still don&#8217;t look gaussian with some holes at the center. how do i fix this?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-374806","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/374806","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/374806\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=374806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}