{"id":197273,"date":"2025-10-17T12:08:27","date_gmt":"2025-10-17T12:08:27","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/calculation-of-spad-photon-detection-efficiency\/"},"modified":"2025-10-17T12:08:34","modified_gmt":"2025-10-17T12:08:34","slug":"calculation-of-spad-photon-detection-efficiency","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/calculation-of-spad-photon-detection-efficiency\/","title":{"rendered":"Calculation of SPAD Photon Detection Efficiency"},"content":{"rendered":"<p>In this article, we introduce a SPAD simulation workflow that involves 3D broadband optical and 2D electrical simulations for the calculation of the SPAD Photon Detection Efficiency (PDE).  We demonstrate how to calculate the optical generation rate using FDTD solver and sweeping over different polarizations and incident angles of the input source. By combining these results with CHARGE simulations, we calculate the PDE vs wavelength for different incident angles and bias voltages.<br \/>\nRead the full article here: <a target=\"_blank\" href=\"https:\/\/optics.ansys.com\/hc\/en-us\/articles\/37884892272275\" rel=\"noopener\">https:\/\/optics.ansys.com\/hc\/en-us\/articles\/37884892272275<\/a><\/p>\n","protected":false},"template":"","class_list":["post-197273","topic","type-topic","status-publish","hentry","topic-tag-lumerical"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"In this article, we introduce a SPAD simulation workflow that involves 3D broadband optical and 2D electrical simulations for the calculation of the SPAD Photon Detection Efficiency (PDE). We demonstrate how to calculate the optical generation rate using FDTD solver and sweeping over different polarizations and incident angles of the input source. By combining these\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/calculation-of-spad-photon-detection-efficiency\/\" \/>\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 Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Calculation of SPAD Photon Detection Efficiency | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"In this article, we introduce a SPAD simulation workflow that involves 3D broadband optical and 2D electrical simulations for the calculation of the SPAD Photon Detection Efficiency (PDE). We demonstrate how to calculate the optical generation rate using FDTD solver and sweeping over different polarizations and incident angles of the input source. By combining these\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/calculation-of-spad-photon-detection-efficiency\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-10-17T12:08:27+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-10-17T12:08:34+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Calculation of SPAD Photon Detection Efficiency | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"In this article, we introduce a SPAD simulation workflow that involves 3D broadband optical and 2D electrical simulations for the calculation of the SPAD Photon Detection Efficiency (PDE). We demonstrate how to calculate the optical generation rate using FDTD solver and sweeping over different polarizations and incident angles of the input source. 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