Planar optomagnonic cavities driven by surface spin waves
Planar optomagnonic cavities driven by surface spin waves
复制标题
表面自旋波驱动的平面光磁腔
DOI：
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
N. Stefanou
中科院分区：
文献类型：
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作者：
P. Pantazopoulos;N. Stefanou
提出并实现了一种适用于周期性时空调制的分层各向异性光介质的广义严格Floquet散射矩阵方法。应用该方法研究了由平面内磁化铁氧体膜形成的光磁腔，其中静磁表面自旋波传播，夹在两个非磁性介质布拉格反射镜之间。我们的研究结果提供了明确的证据，表明当外部入射光被困在腔模式中时，由于耦合时间的增加，与自旋波的相互作用会强烈增强，如果满足适当的选择规则，则会产生明显的影响。通过系统的计算，我们揭示并解释了这种相互作用的一些显著特征，如光谱间隙的形成、可控制的传输和非弹性衍射光束的出现，并表明通过（多）磁振子吸收和发射过程的三共振非弹性散射可以实现光波的有效转换。
A generalized rigorous Floquet scattering-matrix method for stratified anisotropic optical media, subject to a periodic spatiotemporal modulation, is formulated and implemented. The method is applied for studying an optomagnonic cavity formed by an in-plane magnetized ferrite film, in which a magnetostatic surface spin wave propagates, sandwiched between two nonmagnetic dielectric Bragg mirrors. Our results provide unambiguous evidence that externally incident light, when trapped in a cavity mode, experiences a strongly enhanced interaction with the spin wave due to the increased coupling time, which can give rise to pronounced effects if the appropriate selection rules are fulfilled. By means of systematic calculations we reveal and explain some remarkable features of this interaction, such as formation of spectral gaps, controllable transmission, and the emergence of inelastic diffracted beams, and show that efficient conversion of the optical wave can be achieved by triply resonant inelastic scattering through (multi)magnon absorption and emission processes.
影响因子：
3.7
作者：
Sanchar Sharma;Y. Blanter;G. Bauer
通讯作者：
Sanchar Sharma;Y. Blanter;G. Bauer