Publication: Diffusion study in tailored gratings recorded in photopolymer glass with high refractive index species
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2007-10-01
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Rodrigo Martín-Romo, José Augusto
Cheben, Pavel
Monte Muñoz de la Peña, Francisco del
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American Institute of Physics
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Abstract
We report results on the temporal evolution of the diffraction efficiency of volume holographic gratings recorded in a photopolymer glass incorporating Zr-based high refractive index species (HRIS) at molecular level. We record high spatial frequency gratings in this material with diffraction efficiencies near 100%. A two-component diffusion model is introduced for the evolution of refractive index modulation in darkness. Diffusion parameters for the Zr-based HRIS and monomer components have been determined. Codirectional diffusion of both components is demonstrated. The results show the feasibility for tailoring in this photomaterial holographic gratings with high diffraction efficiency over a wide range of spatial frequencies. (C) 2007 American Institute of Physics.
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© 2007 American Institute of Physics.
The financial support from the Spanish Ministry of Education and Science under Project No. TEC2005-02180 is gratefully acknowledged.
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