{"id":372803,"date":"2024-07-19T18:33:27","date_gmt":"2024-07-19T18:33:27","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/372803\/"},"modified":"2024-07-19T18:33:27","modified_gmt":"2024-07-19T18:33:27","slug":"372803","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/372803\/","title":{"rendered":"Reply To: Absorption of materials in infrared regions"},"content":{"rendered":"<p>&lt;p&gt;I am not sure what does this mean &#8220;I couldn&#8217;t get absorption at a wavelength of 3um.&#8221; do you get absorption at other wavelengths?&lt;\/p&gt;&lt;p&gt;For a fixed Gaussian beam, assuming there is no side leakage, the absorption can be calculated as A=1-R-T where R is the reflection.&lt;\/p&gt;&lt;p&gt;You can also use a less-accurate method to add a 3D monitor on the sphere, and using script to calculate the absorption power and power ratio. Please refer to this analysis group:&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/07\/19-07-2024-1721413846-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;This less accurate method means you will need to integrate the absorbed intensity. Since it needs integration in 3D, it is is less accurate than the built-in method to calculate RT directly. But it should give you fair result compared to your experiment as experiment measurement also has some kind of errors.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-372803","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/372803","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\/372803\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=372803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}