Near-Field Effects in Spatial Coherence of Thermal Sources
نویسندگان
چکیده
منابع مشابه
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 contribut...
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Inelastic light scattering in crystals has historically been treated as a spatially incoherent process, giving rise to incoherent optical radiation. Here we demonstrate that Raman scattering can be spatially coherent, in which case it depends on the dimensionality and symmetry of the scatterer. Using near-field spectroscopy, we measure a correlation length of ∼30 nm for the optical phonons in ...
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Luiz Gustavo Cançado, Ryan Beams, Ado Jorio, and Lukas Novotny Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 30123-970, Brazil Institute of Optics, University of Rochester, Rochester, New York 14627, USA Photonics Laboratory, ETH Zürich, 8093 Zürich, Switzerland (Received 28 March 2014; revised manuscript received 2 June 2014; published 26 September ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1999
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.82.1660