LOMS.cz: A computational platform for  high-throughput Classical and Combinatorial Judd-Ofelt analysis and rare-earth spectroscopy

LOMS.cz: A computational platform for high-throughput Classical and Combinatorial Judd-Ofelt analysis and rare-earth spectroscopy | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article LOMS.cz: A computational platform for high-throughput Classical and Combinatorial Judd-Ofelt analysis and rare-earth spectroscopy Jan Hrabovský, Petr Vařák, Robin Kryštůfek This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6228568/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 07 Aug, 2025 Read the published version in Scientific Reports → Version 1 posted 10 You are reading this latest preprint version Abstract We present LOMS.cz (Luminescence, Optical and Magneto-optical Software), an open-source computational platform that addresses the long-standing challenge of standardizing Judd-Ofelt (JO) calculations in rare-earth spectroscopy. Despite JO theory’s six-decade history as the fundamental framework for understanding 4 f ↔4 f transitions, the field lacks standardized computational methodologies for precise and reproducible parameter determination. LOMS integrates three key innovations: (1) automated computation of JO parameters, transition probabilities, branching ratios, and theoretical radiative lifetimes, (2) a dynamically expanding database of experimentally validated parameters enabling direct comparison between computed and empirical results, and (3) a novel Combinatorial JO (C-JO) analysis algorithm that systematically identifies optimal absorption band combinations to ensure reliable parameter extraction. As a proof-of-concept, we demonstrate how this computational framework enables rapid screening of spectroscopic parameters, allowing researchers to predict optical properties with enhanced reliability. By combining automated analysis with experimental validation through its integrated database, LOMS establishes a standardized platform for accelerating the discovery and optimization of rare-earth-based photonic and optoelectronic materials. Physical sciences/Materials science Physical sciences/Optics and photonics Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 07 Aug, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 16 May, 2025 Reviews received at journal 12 May, 2025 Reviews received at journal 16 Apr, 2025 Reviewers agreed at journal 27 Mar, 2025 Reviewers agreed at journal 27 Mar, 2025 Reviewers invited by journal 27 Mar, 2025 Editor assigned by journal 27 Mar, 2025 Editor invited by journal 27 Mar, 2025 Submission checks completed at journal 25 Mar, 2025 First submitted to journal 14 Mar, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6228568","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":443765694,"identity":"c2855ced-3e5b-43f3-91a7-f8cb4441995b","order_by":0,"name":"Jan Hrabovský","email":"data:image/png;base64,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","orcid":"","institution":"Charles University","correspondingAuthor":true,"prefix":"","firstName":"Jan","middleName":"","lastName":"Hrabovský","suffix":""},{"id":443765695,"identity":"d481715e-439a-48f4-914c-40895b360141","order_by":1,"name":"Petr Vařák","email":"","orcid":"","institution":"University of Chemistry and Technology","correspondingAuthor":false,"prefix":"","firstName":"Petr","middleName":"","lastName":"Vařák","suffix":""},{"id":443765696,"identity":"75b234e2-4a00-41c4-bc54-2821df6926a5","order_by":2,"name":"Robin Kryštůfek","email":"","orcid":"","institution":"Institute of Organic Chemistry and Biochemistry","correspondingAuthor":false,"prefix":"","firstName":"Robin","middleName":"","lastName":"Kryštůfek","suffix":""}],"badges":[],"createdAt":"2025-03-14 18:23:11","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6228568/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6228568/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-025-13620-0","type":"published","date":"2025-08-07T15:57:03+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":88814183,"identity":"e6bf1014-66cb-4e4b-a75b-458821e3c8bd","added_by":"auto","created_at":"2025-08-11 16:08:07","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":3553842,"visible":true,"origin":"","legend":"","description":"","filename":"LOMS1npj2.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6228568/v1_covered_1d6530fe-8d44-4616-90dc-51a6dfb74399.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"LOMS.cz: A computational platform for high-throughput Classical and Combinatorial Judd-Ofelt analysis and rare-earth spectroscopy","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-6228568/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6228568/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"We present LOMS.cz (Luminescence, Optical and Magneto-optical Software), an open-source computational platform that addresses the long-standing challenge of standardizing Judd-Ofelt (JO) calculations in rare-earth spectroscopy. 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