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用 Z-扫描方法在 532 nm波长测量了共轭高聚物 PPQ( polyphenylquinoxalines)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。同时得到 Kerr系数n2 ≈ 9.5× 10 -10 esu,与用其他方法的测量结果较好地吻合。
The third order optical nonlinearity of PPQ (polyphenylquinoxalines) thin films was measured by Z-scan method at 532 nm wavelength, and the strong non-linear (two-photon) absorption coefficient β≈0.59cm / MW was found. At the same time, the Kerr coefficient n2 ≈ 9.5 × 10 -10 esu is obtained, which is in good agreement with the measurement results of other methods.