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Proceedings Paper

Self-assembled materials and devices that process light
Author(s): Peiwang Zhu; Hu Kang; Milko E. van der Boom; Zhifu Liu; Guoyang Xu; Jing Ma; Delai Zhou; Seng-Tiong Ho; Tobin Jay Marks
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Paper Abstract

Self-assembled superlattices (SASs) are intrinsically acentric and highly cross-linked structures. For organic electro-optics, they offer great advantages such as not requiring electric field poling for creating an acentric, EO-active microstructure and having excellent chemical, thermal, and orientational stabilities. In this paper, a greatly improved two-step all "wet-chemical" self-assembly (SA) approach is reported. Excellent radiation hardness of the SAS films is demonstrated by high-energy proton irradiation experiments. By introducing metal oxide nanolayers during SA, we show that the refractive indices of SAS films can be tuned over a wide range. Through special chromophore design, the optical absorption maxima of SAS films can also be greatly blue-shifted. Prototype waveguiding electro-optic modulators have been fabricated using the SAS films integrated with low-loss polymeric materials functioning as partial guiding and cladding layers. EO parameters such as the half-wave voltage and the effective electro-optic coefficient are reported.

Paper Details

Date Published: 16 December 2004
PDF: 12 pages
Proc. SPIE 5621, Optical Materials in Defence Systems Technology, (16 December 2004); doi: 10.1117/12.580602
Show Author Affiliations
Peiwang Zhu, Northwestern Univ. (United States)
Hu Kang, Northwestern Univ. (United States)
Milko E. van der Boom, Northwestern Univ. (United States)
Zhifu Liu, Northwestern Univ. (United States)
Guoyang Xu, Northwestern Univ. (United States)
Jing Ma, Northwestern Univ. (United States)
Delai Zhou, Northwestern Univ. (United States)
Seng-Tiong Ho, Northwestern Univ. (United States)
Tobin Jay Marks, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 5621:
Optical Materials in Defence Systems Technology
Anthony W. Vere; James G. Grote; Francois Kajzar, Editor(s)

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