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Second harmonic generation microscopic observations of a multiferroic BiFeO3 single crystal

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5 Author(s)
Yokota, Hiroko ; Department of Physics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan ; Haumont, Raphael ; Kiat, Jean-Michel ; Matsuura, Hiroto
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Anisotropy of the optical second harmonic generation (SHG) in a multiferroic BiFeO3 single crystal is observed by an SHG microscope. Polarization dependences of SH intensities are measured in several polarization configurations of the incident and SH waves to determine the magnitude and sign of polar i-type SHG tensor components. To obtain proper values of these SHG tensors, the effects of the interference term and wave number mismatch are taken into account in these analyses. d24 component is 15 times larger than d32 and this result is essentially different from the thin film case.

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Applied Physics Letters  (Volume:95 ,  Issue: 8 )