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Proceedings Paper

Vortex interference for superresolved beam waists
Author(s): Michael A. Fiddy; Hari Kishore Allamsetty
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Paper Abstract

For over forty years, attempts have been made to realize so-called superresolving pupil functions that permit smaller spot sizes than conventional resolution limits might initially suggest. This was usually achieved by manipulating the diffracted field's zero distribution and was accompanied by huge sidelobes and diminished intensity in the region of interest. By carefully manipulating the interference pattern generated by two optical vortices of different order, one can generate beams of light with dimensions that are spatially superresolved and of controllable cross-sectional shapes. The reason for this is that interfering vortices can possess a much higher density of zeros than one would expect. Recent results employing non-integer vortex beam interference can generate superresolved spots with an intensity close to the theoretical limit for the associated Strehl ratio.

Paper Details

Date Published: 22 October 2004
PDF: 8 pages
Proc. SPIE 5562, Image Reconstruction from Incomplete Data III, (22 October 2004); doi: 10.1117/12.561815
Show Author Affiliations
Michael A. Fiddy, Univ. of North Carolina/Charlotte (United States)
Hari Kishore Allamsetty, Univ. of North Carolina/Charlotte (United States)


Published in SPIE Proceedings Vol. 5562:
Image Reconstruction from Incomplete Data III
Philip J. Bones; Michael A. Fiddy; Rick P. Millane, Editor(s)

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