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Gallego S, Fernández R, Márquez A, et al. Two diffusion photopolymer for sharp diffractive optical elements recording. Opt Lett. 2015;40(14):3221-4doi: 10.1364/OL.40.003221.
Gallego, S., Fernández, R., Márquez, A., Ortuño, M., Neipp, C., Gleeson, M. R., Sheridan, J. T., & Beléndez, A. (2015). Two diffusion photopolymer for sharp diffractive optical elements recording. Optics letters, 40(14), 3221-4. https://doi.org/10.1364/OL.40.003221
Gallego, S, et al. "Two diffusion photopolymer for sharp diffractive optical elements recording." Optics letters vol. 40,14 (2015): 3221-4. doi: https://doi.org/10.1364/OL.40.003221
Gallego S, Fernández R, Márquez A, Ortuño M, Neipp C, Gleeson MR, Sheridan JT, Beléndez A. Two diffusion photopolymer for sharp diffractive optical elements recording. Opt Lett. 2015 Jul 15;40(14):3221-4. doi: 10.1364/OL.40.003221. PMID: 26176434.
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Opt Lett. 2015 Jul 15;40(14):3221-4. doi: 10.1364/OL.40.003221.

Two diffusion photopolymer for sharp diffractive optical elements recording.

Optics letters

S Gallego, R Fernández, A Márquez, M Ortuño, C Neipp, M R Gleeson, J T Sheridan, A Beléndez

PMID: 26176434 DOI: 10.1364/OL.40.003221

Abstract

Photopolymers as recording media are widely used in optical applications. In such materials, changes in the phase of the transmittance function are generated during exposure due to refractive index and thickness modulations. These changes arise primarily as a consequence of photopolymerization and mass transport processes. Characterizing polymers' performance, for example, quantifying the value of monomer diffusion, is therefore very important. Applying index matching, the volume and surface optical effect are separated in an acrylamide/polyvinylalcohol (AA/PVA) material. Using a simplified model that includes the effects of the holes produced during polymerization, both hole and monomer diffusion are analyzed. The analysis presented indicates higher material sensitivity than previously estimated. The results also indicate the possibility of recording sharper diffractive optical elements profiles, like blazed gratings, having diffraction efficiencies higher than 80%.

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