Intensity-dependent change of polarization of light normally reflected from a 〈100〉 GaAs surface (nonlinear-optical activity on reflection)

Abstract

A new nonlinear polarization phenomenon, namely, the rotation of the polarization plane of a light beam normally reflected from the surface of a cubic crystal, has been experimentally observed. An excitonic resonance rotation of the order of 1 deg has been detected on reflection from a 〈001〉 GaAs surface for an excitation of the order of 10⁻⁴ J/cm².

© 1988 Optical Society of America

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