Rodrigo Martín-Romo, José AugustoRodríguez Merlo, DanielCalvo Padilla, María LuisaAlieva Krasheninnikova, Tatiana2023-06-202023-06-202003-070030-400X10.1134/1.1595227https://hdl.handle.net/20.500.14352/51071© 2003 MAIK “Nauka/Interperiodica”. Grant no.TIC 2000-2791E from the Spanish Ministry of Science and Technology is acknowledged. T.A. would like to thank the Spanish Ministry of Education, Culture, and Sport for financial support (grant no.SB2000-0166).Experimental results are presented for light diffraction under the Fresnel regime by two types of fractal gratings: triadic Cantor bars and Vicsek fractals. It is shown that the evolution of the diffraction patterns in the Fresnel regions reveals the hierarchical structure of deterministic fractal gratings.engjournal articlehttp://dx.doi.org/10.1134/1.1595227http://link.springer.comopen access535OpticsSpectroscopyÓptica (Física)2209.19 Óptica Física