Parametric frequency mixing in a magnetoelastically driven linear ferromagnetic-resonance oscillator
Parametric frequency mixing in a magnetoelastically driven linear ferromagnetic-resonance oscillator
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DOI：
10.1103/physrevb.95.060409
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发表时间：
2017-02-15
影响因子：
3.7
通讯作者：
Tobey, R. I.
中科院分区：
文献类型：
--
作者：
Chang, C. L.;Lomonosov, A. M.;Tobey, R. I.
我们证明了在介质衬底上的薄金属膜中的光激发弹性波的铁磁共振（FMR）频率的线性频率转换。磁化的时间分辨探测直接见证磁弹性驱动的参数二次谐波产生，从两个不同的频率和差频混合，以及激发参数共振。从Landau-Lifshitz-吉尔伯特方程出发，导出了弹性驱动（非线性）参量振荡器的解析方程，并证明了线性FMR振荡器的参量调制对混频起主导作用.
We demonstrate the linear frequency conversion of ferromagnetic resonance (FMR) frequency by optically excited elastic waves in a thin metallic film on dielectric substrates. Time-resolved probing of the magnetization directly witnesses magnetoelastically driven parametric second-harmonic generation, sum-and difference-frequency mixing from two distinct frequencies, as well as excitation of parametric resonances. Starting from the Landau-Lifshitz-Gilbert equations, we derive an analytical equation of an elastically driven (nonlinear) parametric oscillator and show that frequency mixing is dominated by the parametric modulation of the linear FMR oscillator.