On the origin of the optical nonlinearity of a gallium-silica interface

(2) Department of Physics; Astronomy; D. J. Richardson (1); H. S. Kim (1); N. I. Zheludev (2) ((1) Optoelectronics Research Centre; P. Petropoulos (1); UK; UK); University of Southampton; V. A. Fedotov (2)

arxiv: physics/0101056 · v1 · pith:KIA7UGCUnew · submitted 2001-01-11 · ⚛️ physics.optics

On the origin of the optical nonlinearity of a gallium-silica interface

P. Petropoulos (1) , H. S. Kim (1) , D. J. Richardson (1) , V. A. Fedotov (2) , N. I. Zheludev (2) ((1) Optoelectronics Research Centre , University of Southampton , UK , (2) Department of Physics

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keywords opticalalpha-galliuminterfacenonlinearityreflectedsilicawaveaffecting

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Simultaneous measurements of the intensity and phase of a probe wave reflected from an interface between silica and elemental alpha-gallium reveal its very strong optical nonlinearity, affecting both these parameters of the reflected wave. The data corroborate with a non-thermal mechanism of optical response which assumes appearance of a homogeneous highly metallic layer, only a few nanometer thick, between the silica and bulk alpha-gallium.

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On the origin of the optical nonlinearity of a gallium-silica interface

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