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Proceedings Article

The investigation of the effect of recording conditions on grating formation in a novel holographic photopolymer

[+] Author Affiliations
Pengfei Liu, Tao Zhang, Yingying Liu, Qianli Zhai, Shiquan Tao

Beijing Univ. of Technology (China)

Xiaojun Wan, Feipeng Wu

Technical Institute of Physics and Chemistry (China)

Proc. SPIE 6832, Holography and Diffractive Optics III, 68320Y (January 04, 2008); doi:10.1117/12.757386
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From Conference Volume 6832

  • Holography and Diffractive Optics III
  • Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu
  • Beijing, China | November 11, 2007

abstract

Holographic photopolymers become promising materials for future production of holographic devices. And the mechanism of hologram formation in photopolymers has been broadly studied. In this paper we present a simplified model in order to describe the monomer diffusion and photopolymerization. According to this model, the main effect the modulation of refraction index comes from the intensity of recording beams and fringe spacing during recording. So we quantitatively analyzed the effect of recording intensity and fringe spacing on diffraction efficiency, and carried out validating experiments with a novel blue-green sensitized photopolymer. Holographic gratings were recorded with different recording beam intensities and different fringe spacing respectively, and corresponding diffraction efficiency were obtained. By fitting the experimental results to the model, we obtained the material parameters, such as diffusion time constant, polymerization coefficient. The experimental results indicated that a higher recording intensity resulted in a faster growth of grating and lower saturated diffraction efficiency. And saturated diffraction efficiency increased with the increasing of fringe spacing. These agreed well with theoretical expectation. This study improves the understanding of recording process and consequently allows building more accurate holographic components in the photopolymers.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Pengfei Liu ; Tao Zhang ; Yingying Liu ; Qianli Zhai ; Shiquan Tao, et al.
"The investigation of the effect of recording conditions on grating formation in a novel holographic photopolymer", Proc. SPIE 6832, Holography and Diffractive Optics III, 68320Y (January 04, 2008); doi:10.1117/12.757386; http://dx.doi.org/10.1117/12.757386


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