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

Isao Yoshimine, Takuya Satoh, Ryugo Iida, Andrzej Stupakiewicz, Andrzej Maziewski, Tsutomu Shimura

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28 Citations (Scopus)

Abstract

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° 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/cm2.

Original languageEnglish
Article number043907
JournalJournal of Applied Physics
Volume116
Issue number4
DOIs
Publication statusPublished - Jul 28 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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