Characterization of photopolymerizable nanoparticle-(thiol-ene) polymer composites for volume holographic recording at 404 nm

Masaru Kawana; Jun-ichiro Takahashi; Satoru Yasui; Yasuo Tomita

doi:10.1117/12.2051584

1 May 2014 Characterization of photopolymerizable nanoparticle-(thiol-ene) polymer composites for volume holographic recording at 404 nm

Masaru Kawana, Jun-ichiro Takahashi, Satoru Yasui, Yasuo Tomita

Author Affiliations +

Proceedings Volume 9131, Optical Modelling and Design III; 913119 (2014) https://doi.org/10.1117/12.2051584
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

We report on volume holographic recording in thiol-ene based nanoparticle-polymer composites (NPCs) at a wavelength of 404 nm by using a highly coherent blue diode laser. We study the photopolymerization dynamics of two types of thiol-ene based NPCs doped with different blue-sensitive initiator/sensitizer systems (Darocur ® TPO and Irgacure ® 784/BzO₂) at various doping concentrations. We also characterize a volume holographic grating recorded in these two types of thiol-ene based NPCs. Such material characterization includes the refractive index modulation, the material recording sensitivity and polymerization shrinkage. It is shown that Darocur R _ TPO provides larger refractive index modulation and higher material recording sensitivity than those with Irgacure ® 784/BzO₂ but these two blue-sensitive initiator/sensitizer systems amount to meeting the requirements of the refractive index modulation and the material recording sensitivity for holographic data storage. However, it is found that shrinkage reduction of a volume grating recorded in these two types of thiol-ene based NPCs at 404 nm is not as effective as the same thiol-ene based NPC doped with Irgacure ® 784/BzO₂ at 532 nm.

Citation Download Citation

Masaru Kawana, Jun-ichiro Takahashi, Satoru Yasui, and Yasuo Tomita "Characterization of photopolymerizable nanoparticle-(thiol-ene) polymer composites for volume holographic recording at 404 nm", Proc. SPIE 9131, Optical Modelling and Design III, 913119 (1 May 2014); https://doi.org/10.1117/12.2051584

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