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Proceedings Paper

New crosslinkable polymers with second-order nonlinear optical chromophores in the main chain
Author(s): Chengzeng Xu; Bo Wu; Larry Raymond Dalton; Peter M. Ranon; Yongqiang Shi; William H. Steier
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Paper Abstract

We have developed a new class of main-chain second-order nonlinear optical (NLO) polymers using well-developed condensation polymerization methods. In these polymers, the NLO chromophore dipoles are expected to be randomly arranged along the polymer backbone (i.e., the dipoles can be head-to-tail, head-to-head, or tail-to-tail). For comparison, a side-chain polymer having virtually the same chromophore as a pendant has also been prepared. The effect of variation in polymer structure on the second-order NLO properties and the effect of crosslinking on the stability of poling-induced macroscopic order are studied. Our results demonstrate that the random main-chain, second-order NLO polymers can be efficiently poled, yielding (chi) (2) as high as 300 pm/V. Long-term temporal stability of the poling- induced order (e.g., no significant NLO decay is observed for more than 2000 hours) can be realized by crosslinking the polymer backbone.

Paper Details

Date Published: 23 July 1993
PDF: 8 pages
Proc. SPIE 1852, Nonlinear Optical Properties of Advanced Materials, (23 July 1993); doi: 10.1117/12.148442
Show Author Affiliations
Chengzeng Xu, Univ. of Southern California (United States)
Bo Wu, Univ. of Southern California (United States)
Larry Raymond Dalton, Univ. of Southern California (United States)
Peter M. Ranon, Univ. of Southern California (United States)
Yongqiang Shi, Univ. of Southern California (United States)
William H. Steier, Univ. of Southern California (United States)


Published in SPIE Proceedings Vol. 1852:
Nonlinear Optical Properties of Advanced Materials
Shahab Etemad, Editor(s)

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