The nonlinear second order optical susceptibility β μ of C 59 ( C 6H 4CH 3 ) N has also been calculated . The result shows that this molecule has quite large nonlinear second order optical susceptibility .
还计算了C59－（C6H4CH3）N的二阶非线性光学系数βμ，结果表明这种分子具有较大的二阶非线性光学系数。
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