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Popescu G, Dogariu A. Spectral anomalies at wave-front dislocations. Phys Rev Lett. 2002;88(18):183902doi: 10.1103/PhysRevLett.88.183902.
Popescu, G., & Dogariu, A. (2002). Spectral anomalies at wave-front dislocations. Physical review letters, 88(18), 183902. https://doi.org/10.1103/PhysRevLett.88.183902
Popescu, G, and Dogariu, A. "Spectral anomalies at wave-front dislocations." Physical review letters vol. 88,18 (2002): 183902. doi: https://doi.org/10.1103/PhysRevLett.88.183902
Popescu G, Dogariu A. Spectral anomalies at wave-front dislocations. Phys Rev Lett. 2002 May 06;88(18):183902. doi: 10.1103/PhysRevLett.88.183902. Epub 2002 Apr 22. PMID: 12005684.
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Phys Rev Lett. 2002 May 06;88(18):183902. doi: 10.1103/PhysRevLett.88.183902. Epub 2002 Apr 22.

Spectral anomalies at wave-front dislocations.

Physical review letters

G Popescu, A Dogariu

Affiliations

  1. School of Optics/CREOL, University of Central Florida, Orlando, FL 32816, USA.

PMID: 12005684 DOI: 10.1103/PhysRevLett.88.183902

Abstract

In a recent Letter, Gbur, Visser, and Wolf [Phys. Rev. Lett. 88, 013901 (2002)] predict that remarkable spectral changes can take place in the neighborhood of phase singularities of a diffracted focused wave. We report here the experimental observation of this anomalous spectral behavior and show that this is a general characteristic of optical vortices. Using a high-resolution interferometric technique, we are able to measure directly both the spectral intensity distribution and the spectral phase at the singular points of optical waves.

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