Anomalous Behavior of Spectra near Phase Singularities of Focused Waves
- 17 December 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 88 (1), 013901
- https://doi.org/10.1103/physrevlett.88.013901
Abstract
It is shown that remarkable spectral changes take place in the neighborhood of phase singularities near the focus of a converging, spatially fully coherent polychromatic wave diffracted at an aperture. In particular, when the spectrum of the wave in the aperture consists of a single line with a narrow Gaussian profile, the spectrum near a phase singularity (i.e., near points of zero intensity of some particular spectral component) changes drastically along a closed loop around the singularity. The spectrum is redshifted at some points, blueshifted at others, and is split into two lines elsewhere.This publication has 5 references indexed in Scilit:
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