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.
@article{arxiv.physics/0101056,
title = {On the origin of the optical nonlinearity of a gallium-silica interface},
author = {P. Petropoulos and H. S. Kim and D. J. Richardson and V. A. Fedotov and N. I. Zheludev},
journal= {arXiv preprint arXiv:physics/0101056},
year = {2010}
}
Comments
12 pages, 5 figures, to be published in Optics Letters