Shaping the focal intensity distribution using spatial coherence
JOSA A, Vol. 25, Issue 3, pp. 575-581 (2008)
http://dx.doi.org/10.1364/JOSAA.25.000575
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Abstract
The intensity and the state of coherence are examined in the focal region of a converging, partially coherent wave field. In particular, Bessel-correlated fields are studied in detail. It is found that it is possible to change the intensity distribution and even to produce a local minimum of intensity at the geometrical focus by altering the coherence length. It is also shown that, even though the original field is partially coherent, in the focal region there are pairs of points at which the field is fully correlated and pairs of points at which the field is completely incoherent. The relevance of this work to applications such as optical trapping and beam shaping is discussed.
© 2008 Optical Society of America
OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(030.1640) Coherence and statistical optics : Coherence
(050.1960) Diffraction and gratings : Diffraction theory
ToC Category:
Coherence and Statistical Optics
History
Original Manuscript: November 12, 2007
Manuscript Accepted: December 11, 2007
Published: February 4, 2008
Virtual Issues
Vol. 3, Iss. 4 Virtual Journal for Biomedical Optics
Citation
Thomas van Dijk, Greg Gbur, and Taco D. Visser, "Shaping the focal intensity distribution using spatial coherence," J. Opt. Soc. Am. A 25, 575-581 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-25-3-575
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