Luminescence, optics and magneto-optics software (LOMS) is free to use online tool for professionals and scientists to encourage their efforts in the field of material science with an emphasis on transparent dielectrics and materials doped with Rare-earth (RE) ions. Software is available using following link: https://www.loms.cz
Software workflow and packages were publsihed in Scientific Reports (Nature portfolio). Article is accessible freely: Hrabovsky et al. Sci Rep 15 (2025) 28945
LOMS was designed and developed by a collective of authors under the leadership of Jan Hrabovsky (Faculty of Mathematics and Physics, Charles University, Prague) and the responsibility of technical execution led by Robin Krystufek (Faculty of Science, Charles University, Prague).
Up to the end of September 2025, the LOMS.cz software contains following modules:
Module 1: Calculation of Classical Judd-ofelt analysis
Judd-Ofelt analysis is a comprehensive methodology utilized in the study of rare-earth ion spectroscopy within various type of materials. This analytical approach focuses on quantifying the interaction between the local matrix field and the 4f electron configuration of rare-earth ions, providing insights into their optical behavior. By employing a set of parameters known as Judd-Ofelt parameters, denoted as Ωi (I=2,4,6), the theory systematically describes the strength and nature of these interactions, which govern the absorption and emission spectra of rare-earth-doped materials. Through rigorous analysis and interpretation of experimental data, Judd-Ofelt analysis enables researchers to predict the relative intensities of spectral transitions and tailor the optical properties of rare-earth-doped materials for diverse applications, including lasers, phosphors, and optical amplifiers.
Module 2: Calcualtion of Combinatorial Judd-Ofelt analysis
By utilizing a higher-than-minimum number of measured absorption bands for conducting a classical Judd-Ofelt analysis, the new combinatorial Judd-Ofelt method is presented in order to study stability and consistency in the calculation of the JO parameters. Presented module therefore facilitate better comparisons of obtained JO parameter values across the literature and provide an opportunity to discuss potential biases.
Module 3: Open database of Judd-Ofelt parameters
Online systematically organised dynamic repository of Judd-Ofelt parameters according to:
1) RE3+ ion
2) Host material
3) RE ion concentrations
4) Method of preparation, etc.,
which is designed for the further addition of new data from other authors in the field of rare-earth ions spectroscopy.
Software structure:
