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Proceedings Paper

Donor strengthening strategy for FTC-based organic nonlinear chromophore
Author(s): Xianqing Piao; Xianmin Zhang; Shiyoshi Yokoyama; Hideki Miki; Isao Aoki; Akira Otomo
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Paper Abstract

The molecular chromphores with high first hyperpolarizability values have been reported with the development of conjugated polyene-bridge or thiophene-bridge system and strong tricyano-containing heterocyclic electron acceptors. In this work, we investigated the enhancement of the electro-optic response by introducing various groups, such as OCH3, Ophenel, OTBDMS, etc, as an additional donor part on conventional FTC type donor-π-acceptor molecules. These new type donors exhibited a strong solvatochromic effect, indicating an extra donation to the pi-conjugated bridge, which shifted the charge-transfer absorption of the chromophores to the lower energy region. Furthermore, the simple modification on the donor moiety resulted in a great improvement in the first hyperpolarizability and macroscopic electro-optic coefficient (r33) over the benchmark dialkylamino FTC counterparts. For the real applications, the stronger acceptor was adopted to further increase the r33 and such a chromophore was post-functionalized as side-chain polymer to enhance the temporal stability.

Paper Details

Date Published: 4 November 2010
PDF: 7 pages
Proc. SPIE 7846, Quantum and Nonlinear Optics, 784609 (4 November 2010); doi: 10.1117/12.871734
Show Author Affiliations
Xianqing Piao, Kyushu Univ. (Japan)
Xianmin Zhang, Kyushu Univ. (Japan)
Shiyoshi Yokoyama, Kyushu Univ. (Japan)
Hideki Miki, National Institute of Information and Communications Technology (Japan)
Isao Aoki, National Institute of Information and Communications Technology (Japan)
Akira Otomo, National Institute of Information and Communications Technology (Japan)

Published in SPIE Proceedings Vol. 7846:
Quantum and Nonlinear Optics
Qihuang Gong; Guang-Can Guo; Yuen-Ron Shen, Editor(s)

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