Spatial coherence of thermal near fields
Optics
2009-11-06 v1 Classical Physics
Abstract
We analyze the spatial coherence of the electromagnetic field emitted by a half-space at temperature T close to the interface. An asymptotic analysis allows to identify three different contributions to the cross-spectral density tensor in the near-field regime. It is shown that the coherence length can be either much larger or much shorter than the wavelength depending on the dominant contribution.
Cite
@article{arxiv.physics/0008028,
title = {Spatial coherence of thermal near fields},
author = {C. Henkel and K. Joulain and R. Carminati and J. -J. Greffet},
journal= {arXiv preprint arXiv:physics/0008028},
year = {2009}
}
Comments
13 pages, 8 graphs, includes Elsevier elsart.cls preprint style. Submitted to Optics Communications (27 july 2000)