TY  - JOUR
A1  - Henkel, Carsten
A1  - Joulain, Karl
A1  - Carminati, Rémi
A1  - Greffet, Jean-Jacques
T1  - Spatial coherence of thermal near fields
N2  - 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.
Y1  - 2000
ER  -