Acta Optica Sinica, Volume. 15, Issue 4, 486(1995)
The Faraday Effect in the Alternating Magnetic Field
The principle and method of the magneto-optical modulation measuring the Faraday effect in a sine magnetic field have been proposed. A theoretical analysis has been performed on the magnetic field-frequency dependence of both the Faraday effect and the degree of the magneto-optical modulation in ferrimagnetic medium.It has been shown that θ',the real part of the Faraday rotation θ,in an alternating magnetic field is smaller than that in a static field, while the imaginary part θ″ is larger than that in a static field. The theory corresponds with the experimental results. The conclusion has been drawn that it is imposible to realize complete on-off switch by a modulator utilizing magneto-optical materials with magnetic circular dichroism.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese]. The Faraday Effect in the Alternating Magnetic Field[J]. Acta Optica Sinica, 1995, 15(4): 486