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Proceedings Paper

Hyperbranched-polymer nanocomposite gratings with ultrahigh refractive index modulation amplitudes for volume holographic optical elements
Author(s): Yasuo Tomita; Toshi Aoi; Juro Oshima; Keisuke Odoi
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Paper Abstract

We report on an experimental investigation of recording a plane-wave volume holographic transmission grating in a photopolymerizable nanoparticle-polymer composite film dispersed with hyperbranched-polymer (HBP) organic nanoparticles in an acrylate monomer blend codoped with an electron donor and acceptor photoinitiator/inhibitor system. The HBP organic nanoparticle possesses the ultrahigh refractive index of 1.82 at 532 nm owing to the inclusion of triazine and aromatic ring units, which provides a large difference in the refractive index between HBP and the formed polymer. It is found that the recorded NPC grating with 23 vol.% HBP dispersion possesses the saturated refractive index modulation amplitude as large as 4.5 x 10-2 at 532 nm and at recording intensities of a few mW/cm2. Obtained results suggest the use of our newly developed HBP-dispersed NPC as volume optical holographic elements for wearable display for augmented and mixed reality.

Paper Details

Date Published: 23 April 2019
PDF: 8 pages
Proc. SPIE 11030, Holography: Advances and Modern Trends VI, 1103007 (23 April 2019); doi: 10.1117/12.2520512
Show Author Affiliations
Yasuo Tomita, The Univ. of Electro-Communications (Japan)
Toshi Aoi, The Univ. of Electro-Communications (Japan)
Juro Oshima, Nissan Chemical Corp. (Japan)
Keisuke Odoi, Nissan Chemical Corp. (Japan)

Published in SPIE Proceedings Vol. 11030:
Holography: Advances and Modern Trends VI
Antonio Fimia; Miroslav Hrabovský; John T. Sheridan, Editor(s)

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