FDTD Modeling of double ultrashort pulse propagation in nonlinear absorbing mediaJ.D. Pisonero, O. Varela, E. García, I. Hernández, J. Ajates, J.L. Sagredo, M. Olivar, C. Albarran, L. Roso and C. MéndezEPJ Web Conf., 238 (2020) 12006DOI: https://doi.org/10.1051/epjconf/202023812006