Somayeh Mirzaee and Jean-Michel Nunzi designed a novel experimental methodology to distinguish between the contributions of electro-optic rectification, multiphoton absorption, and thermal excitation to the voltage measured across a tiny capacitor filled with a nanometer-thin gold film and illuminated by 1550-nm laser light. The article reports the observation of photovoltages originating from electro-optical rectification of laser light utilizing bare metal films in capacitor configuration for the first time. This discovery is promising in view of the simplicity of the material and its relevance in electronics manufacturing. The experimental results reported by Mirzaee and Nunzi are exciting because, surprisingly, the analysis identifies the cause of the observed electro-optic rectification of laser light as electric-field-induced electro-optic rectification (EFIOR), a third-order nonlinear polarization process, instead of the initially expected second-order electro-optic rectification (EOR), the inverse of the electric-optic (or Pockel’s) effect.
You must log in to add comments.