Diffrent spectra in near and far field of dipole

Mufei Xiao

doi:10.1117/12.354895

19 July 1999 Diffrent spectra in near and far field of dipole

Mufei Xiao

Proceedings Volume 3749, 18th Congress of the International Commission for Optics; (1999) https://doi.org/10.1117/12.354895
Event: ICO XVIII 18th Congress of the International Commission for Optics, 1999, San Francisco, CA, United States

Abstract

We demonstrate theoretically that for polychromatic incident light of Gaussian spectrum, a dipole radiates with a redshifted spectrum. The degree of the shift depends on the radiation distance. The shift disappears in far field limit. These spectral changes are not caused by dispersive optical response of the source, nor stemming from correlations in distributions of source or scattering medium. Therefore, the demonstrated spectral changes are due to the nearness of the observation point. In other words, one states that the near field spectra, in general, bear a redshift with respect to the far field spectra.

Citation Download Citation

Mufei Xiao "Diffrent spectra in near and far field of dipole", Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); https://doi.org/10.1117/12.354895

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