标题： 非线性表面磁等离子体学在Kretschmann多层结构中 显示英文标题

标题： Nonlinear surface magneto-plasmonics in Kretschmann multilayers

摘要： 非线性磁等离子体学旨在利用等离子体激发来控制非线性光频转换的机制并调节纳米尺度的效率。 我们研究了在混合金-钴-银多层结构中磁性二次谐波产生的机制，这些结构在基频和二次谐波频率下支持传播的表面等离子体极化激元。 使用Kretschmann几何结构中的磁光光谱学，我们表明二次谐波强度的巨大磁光调制是由二次谐波频率下表面等离子体极化激元的激发主导的，这通过在强等离子体色散光谱区域调节光学波长得到了证实。 我们的原理验证实验突显了非线性磁等离子体学的光明前景，并有助于对磁性表面和界面的非线性光学现象的一般理解。 显示英文摘要

摘要： The nonlinear magneto-plasmonics aims to utilize plasmonic excitations to control the mechanisms and taylor the efficiencies of the non-linear light frequency conversion at the nanoscale. We investigate the mechanisms of magnetic second harmonic generation in hybrid gold-cobalt-silver multilayer structures, which support propagating surface plasmon polaritons at both fundamental and second harmonic frequencies. Using magneto-optical spectroscopy in Kretschmann geometry, we show that the huge magneto-optical modulation of the second harmonic intensity is dominated by the excitation of surface plasmon polaritons at the second harmonic frequency, as shown by tuning the optical wavelength over the spectral region of strong plasmonic dispersion. Our proof-of-principle experiment highlights bright prospects of nonlinear magneto-plasmonics and contributes to the general understanding of the nonlinear optics of magnetic surfaces and interfaces.