Geometric Doppler effect: Spin-split dispersion of thermal radiation

Nir Dahan, Yuri Gorodetski, Kobi Frischwasser, Vladimir Kleiner, Erez Hasman

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A geometric Doppler effect manifested by a spin-split dispersion relation of thermal radiation is observed. A spin-dependent dispersion splitting was obtained in a structure consisting of a coupled thermal antenna array. The effect is due to a spin-orbit interaction resulting from the dynamics of the surface waves propagating along the structure whose local anisotropy axis is rotated in space. The observation of the spin-symmetry breaking in thermal radiation may be utilized for manipulation of spontaneous or stimulated emission.

Original languageEnglish
Article number136402
JournalPhysical Review Letters
Issue number13
StatePublished - 21 Sep 2010
Externally publishedYes


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