Linear and nonlinear magneto-optical diffraction from one-dimensional periodic structures
Linear and nonlinear magneto-optical diffraction from one-dimensional periodic structures
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一维周期结构的线性和非线性磁光衍射
DOI：
10.1063/1.1557761
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发表时间：
2003
影响因子：
3.2
通讯作者：
J. Lodder
中科院分区：
文献类型：
--
作者：
S. V. Lazarenko;A. Kirilyuk;T. Rasing;J. Lodder
利用磁化诱导二次谐波产生（MSHG）研究了周期性结构样品的非线性磁光衍射。在MSHG中可以清楚地观察到几个衍射级，沿着对磁化强度有很强的依赖性。在正和负衍射峰，特别是可见的二阶MSHG信号之间的大小不对称性，解释了菲涅耳因子。结果发现，一阶衍射磁滞回线不同于所有其他的表现出“过冲”在磁化反转，无论是在MSHG和线性磁光克尔效应。然而，这种行为被解释为由于在条纹的磁化的不均匀反转。
Nonlinear magneto-optical diffraction from periodically structured samples has been studied using magnetization-induced second harmonic generation (MSHG). Several orders of diffraction were clearly observable in MSHG, along with a strong dependence on the magnetization. Sizeable asymmetry between the MSHG signal measured in positive and negative diffraction peaks, especially visible in second order, are explained by Fresnel factors. It was found that first-order diffraction hysteresis loops differ from all others by showing an ''overshoot'' at magnetization reversal, both in MSHG and in the linear magneto-optical Kerr effect. Tentatively this behavior is explained as due to inhomogeneous reversal of the magnetization in the stripes.