Holographic recording sensitivity enhancement of Zr0_2 nanoparticle-polymer composites by hydrogen donor and acceptor agents

摘要

We demonstrate holographic recording in surface-modified Zr02 nanoparticle–polymercomposites and their recording sensitivity enhancement in the green by hydrogen donor andacceptor agents, N-phenylglycine (NPG) and 3,3'-bismethoxycarbonyl-4,4'-tert-butylperoxycarbonyl benzophenone (BT2). It is shown that the refractive index modulation and therecording sensitivity increase by factors of approximately 2 and 9, respectively, at a recordingintensity of 10 mW cm-2 as compared to those of our previously reported Zr02nanoparticle–polymer composites (Suzuki et al 2006 Opt. Express 14 12712). It is also shownthat the incorporation of NPG and BT2 into the new composites does not substantively increaselight absorption on recording, but results in a further increase in the recording sensitivity byapproximately a factor of 3 at low recording intensities ((10 mW cm-2).