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학술지 Alkyl Sulfone-containing Optical Polyimide for an Efficient Wavelength Conversion
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저자
도정윤, 박승구, 주정진, 김민수, 박선택, 이명현, 김봉곤, 정명영
발행일
200708
출처
Optical Materials, v.29 no.12, pp.1563-1570
ISSN
0925-3467
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.optmat.2006.10.004
협약과제
07MB2400, 휴대 단말기용 나노 플렉스블 광전배선 모듈, 주정진
초록
Several organic chromophore derivatives have been investigated to get a high optical nonlinearity and low optical loss for nonlinear optical devices. The pi-conjugation length and polar substituents of the chromophore are limited due to an optical propagation loss caused by the chromophore structure. A nitro group is inappropriate for the stilbene fused chromophore because of its strong polarizing power but sulfones exert a reasonable polarizability for the generation of a low optical propagation loss. Three side chain polyimides (PI-Dass, PI-Rdas and PI-Drdas) with sulfone chromophores exhibited optical propagation loss of ca. 3.2 dB/cm at 0.78 μm. According to the binding structure of the chromophore on the polymer, sulfone binding resulted in better optical nonlinearity than amino binding. A hyper branched structure contributes to the increment of the optical nonlinearity of the sulfone chromophore. Absorption spectrum analysis is performed with both solution and solid film of the optical polymer in order to examine the chromophore structure relating to the optical propagation loss. © 2006 Elsevier B.V. All rights reserved.
KSP 제안 키워드
Nitro group, Optical loss, Optical nonlinearity, Optical propagation loss, Organic chromophore, Side-chain, Solid film, Spectrum Analysis, absorption spectrum, branched structure, conjugation length