Shaping the focal intensity distribution using spatial coherence

T. van Dijk, G.J. Gbur, T.D. Visser

Research output: Contribution to JournalArticleAcademicpeer-review

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.
Original languageEnglish
Pages (from-to)575-581
JournalJournal of the Optical Society of America. A: Optics, image science, and vision.
Volume25
Issue number3
DOIs
Publication statusPublished - 2008

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Spatial distribution
spatial distribution
trapping

Bibliographical note

Shaping the focal intensity distribution using spatial coherence

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title = "Shaping the focal intensity distribution using spatial coherence",
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. {\circledC} 2008 Optical Society of America.",
author = "{van Dijk}, T. and G.J. Gbur and T.D. Visser",
note = "Shaping the focal intensity distribution using spatial coherence",
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Shaping the focal intensity distribution using spatial coherence. / van Dijk, T.; Gbur, G.J.; Visser, T.D.

In: Journal of the Optical Society of America. A: Optics, image science, and vision., Vol. 25, No. 3, 2008, p. 575-581.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - Shaping the focal intensity distribution using spatial coherence

AU - van Dijk, T.

AU - Gbur, G.J.

AU - Visser, T.D.

N1 - Shaping the focal intensity distribution using spatial coherence

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

U2 - 10.1364/JOSAA.25.000575

DO - 10.1364/JOSAA.25.000575

M3 - Article

VL - 25

SP - 575

EP - 581

JO - Journal of the Optical Society of America. A: Optics, image science, and vision.

JF - Journal of the Optical Society of America. A: Optics, image science, and vision.

SN - 1084-7529

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ER -