Monte Muñoz de la Peña, Francisco delMartínez Matos, ÓscarRodrigo Martín-Romo, José AugustoCalvo Padilla, María LuisaCheben, Pavel2023-06-202023-06-202006-08-040935-964810.1002/adma.200502675https://hdl.handle.net/20.500.14352/51045© 2006 WILEY-VCH Verlag GmbH & Co. KGaA. This work was supported by MEC under the projects MAT2003-02718 and TIC2002-1846, and by CM under the project S0505/PPQ-0316. We gratefully acknowledge Carmen Munuera and Prof. Carmen Ocal for technical assistance and discussions concerning STM.Improved performance of volume holographic sol-gel materials-refractive index modulations in the 10^2 range, diffraction efficiencies near 100 %, and low levels of noise scattering-are reported that arise from the incorporation of Zr-based high refractive index species capable of diffusing from dark to bright fringes of the interference pattern (see figure).engA volume holographic sol-gel material with large enhancement of dynamic range by incorporation of high refractive index speciesjournal articlehttp://dx.doi.org/10.1002/adma.200502675http://onlinelibrary.wiley.com/open access535Diffraction EfficiencyPhotopolymer MaterialsRecording MaterialData-StorageGlass100-Percent100%GratingsÓptica (Física)2209.19 Óptica Física