{"id":251240,"date":"2023-02-23T16:21:54","date_gmt":"2023-02-23T16:21:54","guid":{"rendered":"\/forum\/forums\/reply\/251240\/"},"modified":"2023-02-23T16:21:54","modified_gmt":"2023-02-23T16:21:54","slug":"251240","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/251240\/","title":{"rendered":"Reply To: Reflection is more than 1 with BFAST source for off-normal incident"},"content":{"rendered":"<p>&lt;p&gt;I checked that it is terminated at 100 % for 1000fs simulation time. So as you suggested, I increased it to <strong>10ps with auto shutoff min 1e-07 and mesh accuracy 2, steep angle PML of layer number 64<\/strong>. And I did the simulation for the <strong>normal incident<\/strong> with broadband BFAST source (487 nm to 787 nm) with pulse width ~ 3fs and offset ~ 9fs, but still, I am getting the reflection of more than 1, even I tried with by adding extra mesh, but still there are no improvements.&nbsp; <img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/23-02-2023-1677168939-R_T.jpg\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;Here is the simulation result Reflection and transmission. And for the BFAST source, the problem happens only at low incident angles; for higher angles (more than 35 degrees), the normalization is happening correctly.&nbsp;&lt;\/p&gt;&lt;p&gt;I think there might be some other problem.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Can you tell me how to check the diffraction ?&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-251240","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/251240","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\/251240\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=251240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}