Saturation and absorption effects on the transmission properties of Kerr-type nonlinear layers C. A. Betancur-Yepes, J. D. Mazo-Vásquez and E. Reyes-Gómez Eur. Phys. J. D, 78 7 (2024) 94 Published online: 17 July 2024 DOI: 10.1140/epjd/s10053-024-00889-5