Macroscopic size effects in second harmonic generation from Si(111) coated by thin oxide films: The role of optical casimir nonlocalityстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Optical second harmonic generation from Si(111)-SiO2 interface shows a strong nonmonotonic dependence on the oxide thickness between 1 and 300 nm. The Brewster angle of incidence, pin, p-out combination of polarizations and strong, uniform suppression of this effect by near-index matching fluid exclude trivial multiple reflections and microscopic interface effects. The observation can be interpreted to originate from the optical (Casimir) nonlocality stemming from the thickness-dependent electron-electron interaction via virtual photons of the quantized electromagnetic field.