Martínez Matos, ÓscarCalvo Padilla, María LuisaCheben, PavelRodrigo Martín-Romo, José AugustoMonte Muñoz de la Peña, Francisco del2023-06-202023-06-202007-120030-400X10.1134/S0030400X0712003Xhttps://hdl.handle.net/20.500.14352/51017© Pleiades Publishing, Ltd., 2007. Partial financial support from the Spanish Ministry of Education and Science, under grant TEC2005–2180 is acknowledged.The advances in the sol-gel holographic recording materials, namely in the photopolymerizable compositions and photorefractive glasses, are reviewed. A new sol-gel holographic material is also discussed that exploits diffusion of a high-refractive-index MA:Zr complex, with the refractive index modulation of n ∼ 10^2 and negligible scattering.engjournal articlehttp://dx.doi.org/10.1134/S0030400X0712003Xhttp://link.springer.comopen access535Silica GlassÓptica (Física)2209.19 Óptica Física