Spatial coherence of thermal near fields
- 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.
| Author details: | Carsten HenkelORCiDGND, Karl Joulain, Rémi Carminati, Jean-Jacques GreffetORCiD |
|---|---|
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2000 |
| Publication year: | 2000 |
| Release date: | 2017/03/24 |
| Source: | Optics communications. - 186 (2000), S. 57 - 67 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
