[60]Fullerene-Containing Polyurethane Films with Large Ultrafast Nonresonant Third-Order Nonlinearity at Telecommunication Wavelengths
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- 作者：Li Kuang ; Qiying Chen ; Edward H. Sargent ; and Zhi Yuan Wang
- 刊名：Journal of the American Chemical Society
- 出版年：2003
- 出版时间：November 12, 2003
- 年：2003
- 卷：125
- 期：45
- 页码：13648 - 13649
- 全文大小：51K
- 年卷期：v.125,no.45(November 12, 2003)
- ISSN：1520-5126
文摘
A significantly enhanced, ultrafast third-order optical nonlinearity at the wavelengths of 1150-1600 nm was demonstrated with cross-linked C60-containing polyurethane films using the Z-scan technique. Good-quality polymer films with a high loading of C60 derivative were obtained by cross-linking of the hydroxyl-containing C60 derivative and a triisocyanate. The positive Kerr coefficient with nonresonant nonlinear refractive index n2 falls in the range of (3.7 ± 0.80) × 10-4 to (2.0 ± 0.6) × 10-3 cm2/GW, and the calculated 
(3) and 
values are up to 9.7 × 10-11 and 9.6 × 10-32 esu at 1550 nm, which are several orders of enhancement in third-order optical nonlinearity over pristine C60 in solution and 1-2 orders of enhancement over recently reported C60 derivatives and conjugated polymers.
(3) and values are up to 9.7 × 10-11 and 9.6 × 10-32 esu at 1550 nm, which are several orders of enhancement in third-order optical nonlinearity over pristine C60 in solution and 1-2 orders of enhancement over recently reported C60 derivatives and conjugated polymers.