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Anisotropic self-diffraction in Mg-doped LiNbO3 (1987)

Arizmendi, Luis ; Powell, Richard C.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 61 (1987), S. 2128-2131

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The characteristics of anisotropic self-diffraction were studied for undoped LiNbO3 crystals and LiNbO3:Mg at doping levels of a few mole percent. From the absolute magnitude and the time dependence of the signal, it was possible to determine the induced refractive-index change and the conductivity of the charges involved in the photorefractive effect for each sample. For these excitation conditions, only charge migration perpendicular to the c axis contributes to laser-induced grating, and thus the conductivity is associated with charge diffusion. The results show that the total refractive-index change causing the self-diffraction is only slightly smaller for the Mg-doped samples than for undoped LiNbO3 while the conductivity is 1 order of magnitude greater for the Mg-doped samples.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.337970

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