Nonlinearly generated harmonic signals in ultra-small waveguides with magnetic films: Tunable enhancements of 2nd and 4th harmonics
Nonlinearly generated harmonic signals in ultra-small waveguides with magnetic films: Tunable enhancements of 2nd and 4th harmonics
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DOI：
10.1063/1.3688036
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发表时间：
2012-03
影响因子：
4
通讯作者：
J. Marsh;V. Zagorodnii;Z. Celinski;R. Camley
中科院分区：
文献类型：
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作者：
J. Marsh;V. Zagorodnii;Z. Celinski;R. Camley
研究了在含有铁磁薄膜的超小波导中高次谐波信号（5次谐波）的非线性产生。不同谐波的强度是高度可调的。特别地，通过改变静磁场相对于波导的长轴的方向，可以将第二和第四谐波信号中的功率增强超过两个数量级。相反，第三和第五谐波对磁场的方向相对不敏感。实验结果解释了分析和数值计算。
The nonlinear generation of high harmonic signals (up to 5th harmonic) is explored in an ultra-small waveguide which contains a thin ferromagnetic film. The strength of the different harmonics is highly tunable. In particular, the power in the 2nd and 4th harmonic signals may be enhanced by over two orders of magnitude by varying the direction of a static magnetic field with respect to the long axis of the waveguide. In contrast, the 3rd and 5th harmonics are relatively insensitive to the direction of the magnetic field. The experimental results are explained by analytical and numerical calculations.