Ultrafast all-optical control of the magnetization in magnetic dielectrics
Ultrafast all-optical control of the magnetization in magnetic dielectrics
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DOI：
10.1063/1.2219497
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发表时间：
2006-10
影响因子：
0.8
通讯作者：
A. Kirilyuk;A. Kimel;F. Hansteen;T. Rasing;R. Pisarev
中科院分区：
文献类型：
--
作者：
A. Kirilyuk;A. Kimel;F. Hansteen;T. Rasing;R. Pisarev
The purpose of this review is to summarize the recent progress on laser-induced magnetization dynamics in magnetic dielectrics. Due to the slow phonon-magnon interaction in these materials, direct thermal effects of the laser excitation can only be seen on the time scale of almost a nanosecond and thus are clearly distinguished from the ultrafast nonthermal effects. However, laser pulses are shown to indirectly modify the magnetic anisotropy in rare-earth orthoferrites via the crystal field, and to bring about spin reorientation within a few picoseconds. More interesting, however, are the direct nonthermal effects of light on spin systems. We demonstrate coherent optical control of the magnetization in ferrimagnetic garnet films on a femtosecond time scale through a combination of two different ultrafast and nonthermal photomagnetic effects and by employing multiple pump pulses. Linearly polarized laser pulses are shown to create a long-lived modification of the magnetocrystalline anisotropy via optically...
