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Phys Rev Lett. 2009 Sep 4;103(10):103906. Epub 2009 Sep 4.

Transverse photovoltage induced by circularly polarized light.

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Department of Physics, Tohoku University, Sendai, Japan.


We discovered that when circularly polarized light is obliquely incident on a two-dimensional metallic photonic crystal slab, electrical voltage is induced perpendicular to the incident plane. The sign of the signal is reversed by changing the sense of polarization or incident angle. The origin of this transverse photoinduced voltage is explained in terms of the force proportional to the light intensity induced by the asymmetry, which is brought about by the angular momentum of the incident light, along with the modification of local near-surface electromagnetic fields in the slab and field enhancement due to surface plasmon resonance.

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