Optimising zero-order suppression in ion-exchanged phase gratingsCarlos Montero-Orille, Héctor González-Núñez, Xesús Prieto-Blanco, Vicente Moreno, Dolores Mouriz, María C. Nistal and Jesús LiñaresEPJ Web Conf., 238 (2020) 03006DOI: https://doi.org/10.1051/epjconf/202023803006