Optimal synthetic design of second-order nonlinear optical material with good temporal stability

Article abstract of DOI:10.1080/10587259608040304

Second-order nonlinear optical copolymers containing p-hydroxyphenyl maleimide or 4-cinnamoyloxy-phenylmaleimide as a comonomer were newly synthesized. For improving the temporal stability, we adopted the crosslink reaction thermally and photochemically. Second-order nonlinear optical properties of the poled/cured films were investigated in terms of the second harmonic generation (SHG) and linear electro-optic (EO) coefficient measurement. SHG coefficient, d₃₃ was found to be 14 pm/V at the fundamental wavelength of 1064 nm and EO coefficient, r₃₃ was found to be 25-30 pm/V at 633 nm wavelength in two different crosslinked structures. To prevent the orientational relaxation of poled polymer, thermal crosslink reaction was induced using diisocyanate as a crosslinker between the side chains themselves. Another photo-crosslink was induced exposing the film at 257 nm wavelength during poling. Temporal stabilities of second-order NLO coefficients of crosslinked polymer systems were proved much better than that of guest-host system or other side chain polymers.

Full text of DOI:10.1080/10587259608040304

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Molecular Crystals and Liquid Crystals
Science and Technology. Section A.
Molecular Crystals and Liquid Crystals
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Optimal Synthetic Design of Second-
Order Nonlinear Optical Material with
Good Temporal Stability
a
b
b
Dong Hoon Choi , Sangyup Song , Woong Sang Jahng &
b
Nakjoong Kim
a
Department of Textile Engineering , Kyung Hee University
Yongin-Kun , Kyungki-Do, 449-701, KOREA
b
Division of Polymer Research , Korea Institute of Science and
Technology , P.O. Box 131, Cheongryang, Seoul, 130-650, KOREA
Published online: 04 Oct 2006.
To cite this article: Dong Hoon Choi , Sangyup Song , Woong Sang Jahng & Nakjoong Kim (1996)
Optimal Synthetic Design of Second-Order Nonlinear Optical Material with Good Temporal
Stability, Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular
Crystals and Liquid Crystals, 280:1, 17-26, DOI: 10.1080/10587259608040304
To link to this article: http://dx.doi.org/10.1080/10587259608040304
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