Improvement of holographic recording sensitivities in the green in SiO[sub 2] nanoparticle-dispersed methacrylate photopolymers doped with pyrromethene dyes

Tomita, Yasuo; Nishibiraki, Hiroshi
July 2003
Applied Physics Letters;7/21/2003, Vol. 83 Issue 3, p410
Academic Journal
We demonstrate more than one-order-of-magnitude improvement of holographic recording sensitivities in the green by doping pyrromethene dyes into SiO[SUB2] nanoparticle-dispersed methacrylate photopolymer films. Holographic recording dynamics are measured for several dye concentrations and writing intensities. It is found that there exists the optimum writing intensity for a given dye concentration to maximize the diffraction efficiency. Noticeable hologram-apodization phenomena caused by the longitudinal refractive-index changes are also observed in the Bragg-angle selectivity curve.


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