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Proceedings Paper

Recent progress in developing highly efficient and thermally stable nonlinear optical polymers for electro-optics
Author(s): Jingdong Luo; Sen Liu; Marnie A. Haller; Jae-Wook Kang; Tae-Dong Kim; Sei-Hum Jang; Baoquan Chen; Neil Tucker; Hongxiang Li; Hong-Zhi Tang; Larry R. Dalton; Yi Liao; Bruce H. Robinson; Alex K.-Y. Jen
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Paper Abstract

Recent development of high-performance nonlinear optical polymers for electro-optics (E-O) is reviewed in this paper. A highly efficient and thermally stable nonlinear optical (NLO) chromophore, namely 2-[4-(2-{5-[2-(4-{Bis-(tert-butyl-dimethyl-silanyloxy)-ethyl]-amino}-phenyl)-vinyl]-thiophen-2-yl}-vinyl)-3-cyano-5-trifluoromethyl-5H-furan-2-ylidene]-malononitrile, has been prepared and incorporated in amorphous polycarbonate (APC) composites. The result from high electric field poling shows a very large E-O coefficient (r33 = 94 pm/V at 1.3 μm), ~80% of which can be maintained at 85 °C for more than 500 hours. In addition to this guest/host sysytem, a high Tg side-chain polymer, derived from a 3-D cardo-type polimide with dendron-encapsulated chromophores as pendent groups has also been synthesized and characterized. A high degree of chromophore dipole orientation and a large r33 of 71 pm/V at 1.3 μm can be achieved in this poled polyimide. More than 90% of its E-O activity can be maintained at 85 °C for more than 600 hours. To access the full potential of poled polymers for device applications, we have developed a new lattice-hardening approach to overcome the “nonlinearity-stability-tradeoff” of conventional thermoset methods. By using the Diels-Alder lattice-hardening process, we can achieve the same high poling efficiency and large r33value as in a guest-host system while maintaining good thermal stability seen in densely-crosslinked polymers. By modifying the electronic properties of the crosslinking reagents, we can fine-tune the processing temperature window of the Diels-Alder reactions to achieve hardened materials with optimal properties.

Paper Details

Date Published: 18 June 2004
PDF: 8 pages
Proc. SPIE 5351, Organic Photonic Materials and Devices VI, (18 June 2004); doi: 10.1117/12.533170
Show Author Affiliations
Jingdong Luo, Univ. of Washington (United States)
Sen Liu, Univ. of Washington (United States)
Marnie A. Haller, Univ. of Washington (United States)
Jae-Wook Kang, Univ. of Washington (United States)
Tae-Dong Kim, Univ. of Washington (United States)
Sei-Hum Jang, Univ. of Washington (United States)
Baoquan Chen, Univ. of Washington (United States)
Neil Tucker, Univ. of Washington (United States)
Hongxiang Li, Univ. of Washington (United States)
Hong-Zhi Tang, Univ. of Washington (United States)
Larry R. Dalton, Univ. of Washington (United States)
Yi Liao, Univ. of Washington (United States)
Bruce H. Robinson, Univ. of Washington (United States)
Alex K.-Y. Jen, Univ. of Washington (United States)


Published in SPIE Proceedings Vol. 5351:
Organic Photonic Materials and Devices VI
James G. Grote; Toshikuni Kaino, Editor(s)

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