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在 532 nm波长处测量了共轭高聚物 PPQ薄膜的三阶光学非线性参数 ,发现其较强的非线性 (双光子 )吸收系数β≈ 0 . 59cm/ MW。其非线性折射率系数 n2 ≈ 9. 5× 10 -10 esu,认为这是双光子激发的纯电子响应。并对材料的品质因素进行了评估。
The third-order optical nonlinearity of the conjugated polymer PPQ film was measured at 532 nm and its strong nonlinear (two-photon) absorption coefficient was found to be β≈0.59 cm / MW. The nonlinear refractive index coefficient n2 ≈ 9.5 × 10 -10 esu, that this is a pure two-photon excited electron response. The quality of the material was evaluated.