Spectral behavior in ZnGeP2 and CdSiP2-based high-power nanosecond pulsed mid-IR parametric sources Marcin Piotrowski, Gerhard Spindler, Achille Bogas-Droy, Stefano Bigotta and Anne Hildenbrand-Dhollande EPJ Web Conf., 307 (2024) 04053 Published online: 18 October 2024 DOI: 10.1051/epjconf/202430704053