Polarization mixing, bound states in a continuum, and exciton-polaritons in photonic crystal slabs by a guided-mode expansion approachSimone Zanotti, Momchil Minkov, Davide Nigro, Dario Gerace, Shanhui Fan and Lucio Claudio AndreaniEPJ Web Conf., 309 (2024) 05010DOI: https://doi.org/10.1051/epjconf/202430905010