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

Journal Article · Mon Jul 28 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4891107· OSTI ID:22308541

Yoshimine, Isao; Iida, Ryugo; Shimura, Tsutomu ^[1]; Satoh, Takuya ^[1]; Stupakiewicz, Andrzej; Maziewski, Andrzej ^[2]

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1. Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505 (Japan)
2. Laboratory of Magnetism, Faculty of Physics, University of Bialystok, Bialystok 15-424 (Poland)

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/cm{sup 2}.

• OSTI ID: 22308541
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
ANISOTROPY
BISMUTH ADDITIONS
CHARGE-COUPLED DEVICES
DOPED MATERIALS
EXCITATION
FERRITE GARNETS
NONLINEAR PROBLEMS
ORIENTATION
POLARIZATION
RARE EARTHS
SPACE DEPENDENCE
SPIN
SPIN WAVES
VISIBLE RADIATION
VOIGT EFFECT
WAVE FORMS