{"id":223081,"date":"2022-08-02T22:57:27","date_gmt":"2022-08-02T22:57:27","guid":{"rendered":"\/forum\/forums\/reply\/223081\/"},"modified":"2022-08-02T22:57:27","modified_gmt":"2022-08-02T22:57:27","slug":"223081","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223081\/","title":{"rendered":"Reply To: Calculation of magneto-optical Kerr rotation"},"content":{"rendered":"<p>&lt;p&gt;When BFAST is used, it automatically override the original &#8220;priodic boudary conditions&#8221; with its own special boundaries to keep the incident wavefront to be planar. From your result it is not oviously wrong. But make sure you chose the correct order. Please check if there is any higher-order diffraction. If large diffraction angles are there, the PML performance may be degraded. If so, you may need to use &#8220;Steep Angle PML&#8221;, and use more number of PML layers if mesh size is small. you can set roughly the PML half wavelength thick.&lt;\/p&gt;&lt;p&gt;In addition, please check the resonance. If there is strong resonance, the simulation my need longer simulaiton time and smaller autoshutoff min.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-223081","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"When BFAST is used, it automatically override the original &quot;priodic boudary conditions&quot; with its own special boundaries to keep the incident wavefront to be planar. From your result it is not oviously wrong. But make sure you chose the correct order. Please check if there is any higher-order diffraction. If large diffraction angles are there,\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223081\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: Calculation of magneto-optical Kerr rotation | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"When BFAST is used, it automatically override the original &quot;priodic boudary conditions&quot; with its own special boundaries to keep the incident wavefront to be planar. From your result it is not oviously wrong. But make sure you chose the correct order. Please check if there is any higher-order diffraction. If large diffraction angles are there,\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223081\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-08-02T22:57:27+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-08-02T22:57:27+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Calculation of magneto-optical Kerr rotation | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"When BFAST is used, it automatically override the original &quot;priodic boudary conditions&quot; with its own special boundaries to keep the incident wavefront to be planar. From your result it is not oviously wrong. But make sure you chose the correct order. Please check if there is any higher-order diffraction. 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