Spectral gain investigation of large size OPCPA based on partially deuterated KDPMarco Galimberti, Alexis Boyle, Ian O. Musgrave, Pedro Oliveira, Dave Pepler, Waseem Shaikh, Trevor B. Winstone, Adam Wyatt and Cristina Hernandez–GomezEPJ Web of Conferences, 167 (2018) 01006DOI: https://doi.org/10.1051/epjconf/201816701006