{"id":320621,"date":"2023-12-03T19:58:16","date_gmt":"2023-12-03T19:58:16","guid":{"rendered":"\/forum\/forums\/topic\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\/"},"modified":"2023-12-03T20:03:09","modified_gmt":"2023-12-03T20:03:09","slug":"question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\/","title":{"rendered":"Question About Simulating Saturable Absorption  (Setting imaginary part of Chi3)"},"content":{"rendered":"<p><span style=\"font-size: 14pt\">Dear Lumerical Community,<\/span><\/p>\n<p><span style=\"font-size: 14pt\">I&#8217;m simulating metal&#8217;s saturable absorption in Lumerical FDTD and need to define the imaginary part of Chi3. The existing models (eg. Chi2\\Chi3, Raman Kerr) seem to allow only for the real part. Any advice on how to do this?<\/span><\/p>\n<p><span style=\"font-size: 14pt\">Thanks!<\/span><\/p>\n","protected":false},"template":"","class_list":["post-320621","topic","type-topic","status-closed","hentry","topic-tag-absorption-1","topic-tag-harmonic","topic-tag-material-nonlinearity-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Dear Lumerical Community,I&#039;m simulating metal&#039;s saturable absorption in Lumerical FDTD and need to define the imaginary part of Chi3. The existing models (eg. Chi2\\Chi3, Raman Kerr) seem to allow only for the real part. Any advice on how to do this?Thanks!\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\/\" \/>\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=\"Question About Simulating Saturable Absorption (Setting imaginary part of Chi3) | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Dear Lumerical Community,I&#039;m simulating metal&#039;s saturable absorption in Lumerical FDTD and need to define the imaginary part of Chi3. The existing models (eg. Chi2\\Chi3, Raman Kerr) seem to allow only for the real part. Any advice on how to do this?Thanks!\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-12-03T19:58:16+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-12-03T20:03:09+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Question About Simulating Saturable Absorption (Setting imaginary part of Chi3) | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Dear Lumerical Community,I&#039;m simulating metal&#039;s saturable absorption in Lumerical FDTD and need to define the imaginary part of Chi3. The existing models (eg. Chi2\\Chi3, Raman Kerr) seem to allow only for the real part. Any advice on how to do this?Thanks!\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/#listItem\",\"name\":\"harmonic\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/#listItem\",\"position\":3,\"name\":\"harmonic\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\\\/#listItem\",\"name\":\"Question About Simulating Saturable Absorption  (Setting imaginary part of Chi3)\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\\\/#listItem\",\"position\":4,\"name\":\"Question About Simulating Saturable Absorption  (Setting imaginary part of Chi3)\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/#listItem\",\"name\":\"harmonic\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-about-simulating-saturable-absorption-setting-imaginary-part-of-chi3\\\/\",\"name\":\"Question About Simulating Saturable Absorption (Setting imaginary part of Chi3) | Ansys Learning Forum\",\"description\":\"Dear Lumerical Community,I'm simulating metal's saturable absorption in Lumerical FDTD and need to define the imaginary part of Chi3. 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The existing models (eg. Chi2\\Chi3, Raman Kerr) seem to allow only for the real part. 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