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

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}.
Authors:
; ;  [1] ;  [1] ;  [2] ;  [2] ; ;  [3]
  1. Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505 (Japan)
  2. (Japan)
  3. Laboratory of Magnetism, Faculty of Physics, University of Bialystok, Bialystok 15-424 (Poland)
Publication Date:
OSTI Identifier:
22308541
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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