{"id":397586,"date":"2024-12-16T09:27:50","date_gmt":"2024-12-16T09:27:50","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/397586\/"},"modified":"2024-12-16T09:27:50","modified_gmt":"2024-12-16T09:27:50","slug":"397586","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/397586\/","title":{"rendered":"Reply To: How does FDTD define the &#8216;sourcepower&#8217; when 2 sources are set?"},"content":{"rendered":"<p>&lt;p class=&#8221;MsoNormal&#8221;&gt;Dear Pengsheng,&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;Thank you for contacting us.&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;As explained in <a href=\"https:\/\/optics.ansys.com\/hc\/en-us\/articles\/360034925313-sourcepower-Script-command\">sourcepower &#8211; Script command &ndash; Ansys Optics<\/a>, if multiple sources are used, the sourcepower(f) command will return the sum of all sourcepowers from all sources. If you want to calculate the sourcepower from a specific source, you need to use sourcepower(f, option, name), where &ldquo;name&rdquo; is the name of this source.&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;If you have two sources each corresponding to a different single wavelength, most of the power for this wavelength will come from the corresponding source. For example, let&rsquo;s assume that you have two sources named source_400 which has wavelength of 400nm and source_700 which has wavelength of 700nm. If you look at the sourcepower that corresponds to 400nm using script, you will get the following results:&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&lt;span style=&#8221;mso-no-proof: yes;&#8221;&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/16-12-2024-1734341233-mceclip0.png\" \/>&lt;br&gt;&lt;!&#8211;[endif]&#8211;&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;The sourcepwer of source_700 that corresponds to 400nm wavelength is 11 orders of magnitude lower than the one of source_400. Hence, if you use sourcepower(f_400) without specifying the source name, you will get the sourcepower of source_400 since the sourcepower of source_700 at 400nm wavelength is negligible.&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;Best regards,&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;Afroditi&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-397586","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/397586","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\/397586\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=397586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}