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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 21, Iss. 12 — Dec. 1, 2004
  • pp: 2418–2423

Spectral anomalies in focused waves of different Fresnel numbers

Carlos J. Zapata-Rodrı́guez and Juan A. Monsoriu  »View Author Affiliations


JOSA A, Vol. 21, Issue 12, pp. 2418-2423 (2004)
http://dx.doi.org/10.1364/JOSAA.21.002418


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Abstract

Light propagation induces remarkable changes in the spectrum of focused diffracted beams. We show that spectral changes take place in the vicinity of phase singularities in the focal region of spatially coherent, polychromatic spherical waves of different Fresnel numbers. Instead of the Debye formulation, we use the Kirchhoff integral to evaluate the focal field accurately. We find that as a result of a decrease in the Fresnel number, some cylindrical spectral switches are geometrically transformed into conical spectral switches.

© 2004 Optical Society of America

OCIS Codes
(260.1960) Physical optics : Diffraction theory
(260.3160) Physical optics : Interference
(300.6170) Spectroscopy : Spectra

History
Original Manuscript: June 5, 2004
Revised Manuscript: July 7, 2004
Manuscript Accepted: July 7, 2004
Published: December 1, 2004

Citation
Carlos J. Zapata-Rodrı́guez and Juan A. Monsoriu, "Spectral anomalies in focused waves of different Fresnel numbers," J. Opt. Soc. Am. A 21, 2418-2423 (2004)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-12-2418

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