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Applied Optics

Applied Optics


  • Vol. 35, Iss. 31 — Nov. 1, 1996
  • pp: 6146–6150

Characterization of photopolymerization by a holographic technique applied to a scattering hydrogel

O. P. Jordan and F. Marquis-Weible  »View Author Affiliations

Applied Optics, Vol. 35, Issue 31, pp. 6146-6150 (1996)

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A holographic technique, which consists of writing a phase grating onto a photopolymer layer and recording the time evolution of its diffraction efficiency, is presented for a scattering hydrogel. The influence of photopolymer thickness and writing laser intensity is investigated. Writing parameters that yield maximum diffraction efficiency are determined. A thickness greater than 1/3 of the scattering length results in the diffusion of light in the sample, leading to a decreased diffraction efficiency of the grating. This behavior can be explained by a combination of chemical diffusion and optical scattering. Finally, a calibration of diffraction efficiency with respect to a gel and sol fraction is presented.

© 1996 Optical Society of America

Original Manuscript: December 18, 1995
Revised Manuscript: April 11, 1996
Published: November 1, 1996

O. P. Jordan and F. Marquis-Weible, "Characterization of photopolymerization by a holographic technique applied to a scattering hydrogel," Appl. Opt. 35, 6146-6150 (1996)

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