Coherent Synthesis of ultra-broadband Optical Parametric Amplifiers C. Manzoni, S.W. Huang, G. Cirmi, P. Farinello, J. Moses, S. De Silvestri, F. X. Kärtner and G. Cerullo EPJ Web of Conferences, 41 (2013) 10002 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134110002