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We present several new characteristics of beam fanning in a bulk sample of Bi12SiO20 with a dc electric field applied to it. Significant dependence of the beam fanning on the polarization state of the incident laser beam is observed. Moreover, the fanning light experiences a spontaneous frequency shift with respect to the incident light that ensures maximum beam coupling, because of which the fanning itself can exist.
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Pedersen et al. (1995) studied this question.
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