All-optical detection of phase fronts of propagating spin waves in a Ni81Fe19 microstripe
All-optical detection of phase fronts of propagating spin waves in a Ni81Fe19 microstripe
复制标题
DOI：
10.1063/1.3262348
复制
发表时间：
2009-11-02
影响因子：
4
通讯作者：
Hillebrands, B.
中科院分区：
文献类型：
--
作者：
Vogt, K.;Schultheiss, H.;Hillebrands, B.
利用共面波导的短端进行局部激励，确定了Ni81Fe19磁性微结构中传播的自旋波的波长和相位。用相分辨布里渊光散射显微镜测量了自旋波特性。这项最新发展的技术允许明确的实验可视化传播自旋波的相结构，并在这里被用于磁性微结构。计算结果与理论预测的自旋波色散关系符合得很好。
We present the determination of the wavelength and phase of propagating spin waves in magnetic microstructures made of Ni81Fe19 using the shorted end of a coplanar waveguide for local excitation. The spin wave characteristics have been measured by phase resolved Brillouin light scattering microscopy. This recently developed technique allows for the unambiguous experimental visualization of the phase structure of propagating spin waves and is employed here to magnetic microstructures. The results show an excellent agreement with the theoretically predicted spin-wave dispersion relations.