Abstract

Intensity dependent interband Faraday rotation has been observed in InSb using a low power cw CO laser. The dependence of induced rotation on incident power and frequency shows saturation and resonance enhancement effects. The induced rotation is qualitatively attributed to the dispersion associated with saturable absorption of a valence to conduction band magneto-optical transition and includes an acceptor impurity effect. Induced rotations of >10 3 degrees/W cm were observed.

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