third order nonlinear refractive index 三阶非线性折射率n
nonlinear refractive-index fiber 变折射率光纤
The experimental results show that the nonlinear refractive index of the sample is a negative value.
实验结果表明，该样品的非线性折射率为负值。
In particular, for the TM case, the biaxial nature of nonlinear refractive index is considered without any approximation.
特别是对于TM波，考虑了非线性折射率的双轴性，没有任何近似。
The article theoretically analyzes the impact of self phase modulation caused by nonlinear refractive index on ultrashort pulse.
从理论上分析了非线性折射率引起的脉冲自位相调制对超短脉冲的影响。
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