Phase-controllable spin wave generation in iron garnet by linearly polarized light pulses

被引：46

作者：

Yoshimine, Isao ^{[1
]}

Satoh, Takuya ^{[1
,2
,3
]}

Iida, Ryugo ^{[1
]}

Stupakiewicz, Andrzej ^{[4
]}

Maziewski, Andrzej ^{[4
]}

Shimura, Tsutomu ^{[1
]}

机构：

[1] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Tokyo 1020076, Japan

[3] Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan

[4] Univ Bialystok, Magnetism Lab, Fac Phys, PL-15424 Bialystok, Poland

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 04期

基金：

日本科学技术振兴机构;

关键词：

EXCITATION; SCATTERING; EMISSION;

D O I：

10.1063/1.4891107

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A phase-controlled spin wave was non-thermally generated in bismuth-doped rare-earth iron garnet by linearly polarized light pulses. We controlled the initial phase of the spin wave continuously within a range of 180 degrees by changing the polarization azimuth of the excitation light. The azimuth dependences of the initial phase and amplitude of the spin wave were attributed to a combination of the inverse Cotton-Mouton effect and photoinduced magnetic anisotropy. Temporally and spatially resolved spin wave propagation was observed with a CCD camera, and the waveform was in good agreement with calculations. A nonlinear effect of the spin excitation was observed for excitation fluences higher than 100 mJ/cm(2). (C) 2014 AIP Publishing LLC.

引用

页数：8

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