Wavelength dependence and figures of merit of ultrafast third-order optical nonlinearity of a conjugated 3,3′-bipyridine derivative
Wavelength dependence and figures of merit of ultrafast third-order optical nonlinearity of a conjugated 3,3′-bipyridine derivative
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DOI：
10.1364/ao.42.007235
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发表时间：
2003-12-20
期刊：
影响因子：
1.9
通讯作者：
Attias, AJ
中科院分区：
文献类型：
--
作者：
Chen, QY;Sargent, EH;Attias, AJ
本文报道了一种共轭3，3 ′-联吡啶衍生物的三阶光学非线性的波长依赖性和优值。共轭3，3 ′-联吡啶衍生物是一种设计的施主-受主-受主-施主非偶极结构。Z扫描揭示了正的非线性折射率变化的波长长于单光子吸收波长。虽然非线性克尔系数n（2）的值从6.0（+/-0.2）X 10（-6）cm（2）/GW，750 nm至4.6（+/-0.7）× 10（-6）cm（2）/GW，非线性吸收β值从750 nm处的0.084 cm/GW降低到1550 nm处的可忽略值，从而在电信波长处产生优异的非线性损耗品质因数。(C)2003年美国光学学会。
The wavelength dependence and figures of merit of the third-order optical nonlinearity of a conjugated 3,3'-bipyridine derivative, a designed nondipolar structure of the donor-acceptor-acceptor-donor type, are reported. Z scans reveal positive nonlinear refractive-index changes for wavelengths longer than the one-photon absorption wavelength. Although the value of nonlinear Kerr coefficient n(2) decreases from 6.0(+/-0.2) X 10(-6) cm(2) /GW at 750 nm to 4.6(+/-0.7) X 10(-6) cm(2) /GW at 1550 nm, the value of nonlinear absorption beta decreases from 0.084 cm/GW at 750 nm to a negligible value at 1550 nm, giving rise to excellent nonlinearity-to-loss figures of merit at telecommunications wavelengths. (C) 2003 Optical Society of America.