光学学报, 1992, 12 (6): 572, 网络出版: 2007-09-11
噁英鎓类高聚物薄膜非线性折射率的测量及其时间分辨研究
A study of measurement of nonlinear refractive index and time resolution for pyrylium-doped polymer films
摘要
本文报道有机杂环化合物(口恶)英(钅翁)掺杂高聚物PMMA薄膜的光学特征,在600~1000nm波长范围内,透射率为80~90%,材料折射率n=1.554,利用反向传播简并四波混频法测得该薄膜的非线性光学系数x(3)为10-10e.s.u.,并观测到后向泵浦束被延迟情况下,前向泵浦光束与探测光束形成光栅瞬态弛豫时间分辨曲线,它的弛豫时间为30ps.
Abstract
In this letter we report the nonlinear property of pyrylium-doped superpolymer studied by degenerate four-wave mixing (DFWM). The nonlinear susceptibility x(3) of pyrylium-doped polymer is 3×10-10 e.s.u.. The time resolution curve formed by the decay of phase conjugate reflection as a function of the delay of the backward pump pulse in the counterpropagating DFWM scheme was observed, and the relaxation time is 30 ps. The electronic and brientational mechanisms are discussed.
庄大奎, 王文耀, 邱佩华, 刘华, 舒菊坪. 噁英鎓类高聚物薄膜非线性折射率的测量及其时间分辨研究[J]. 光学学报, 1992, 12(6): 572. 庄大奎, 王文耀, 邱佩华, 刘华, 舒菊坪. A study of measurement of nonlinear refractive index and time resolution for pyrylium-doped polymer films[J]. Acta Optica Sinica, 1992, 12(6): 572.