User guide ========== Use these guides to move from material discovery to complete optical calculations. .. list-table:: :widths: 28 72 * - :doc:`Materials and catalog ` - Choose a material model, search the RefractiveIndex.INFO catalog, and preserve provenance. * - :doc:`Custom materials ` - Import arrays or CSV data, define formula coefficients, validate data, and export YAML. * - :doc:`Interfaces and thin films ` - Calculate Fresnel coefficients, characteristic angles, and coherent multilayer spectra. * - :doc:`Catalog browser ` - Search and inspect the downloaded database from an interactive terminal interface. * - :doc:`Physical conventions ` - Review wavelength, sign, interpolation, power, and provenance conventions. .. toctree:: :hidden: :maxdepth: 2 materials_and_catalog custom_materials thin_films catalog_browser conventions