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Proceedings Paper

Coherence current: contrast flow in coherence function
Author(s): Wei Wang; Mitsuo Takeda
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Paper Abstract

Introducing scalar and vector densities for a mutual coherence function, we present a new conservation law for optical coherence of scalar wave fields in the form of continuity equation. This coherence conservation law provides new insights into topological phenomena for the complex coherence function. Some properties related to the newly introduced coherence vector density, such as a circulating coherence current associated with a coherence vortex, are investigated both theoretically and experimentally for the first time.

Paper Details

Date Published: 14 August 2006
PDF: 7 pages
Proc. SPIE 6285, The Nature of Light: Light in Nature, 628502 (14 August 2006); doi: 10.1117/12.682333
Show Author Affiliations
Wei Wang, The Univ. of Electro-Communications (Japan)
Mitsuo Takeda, The Univ. of Electro-Communications (Japan)


Published in SPIE Proceedings Vol. 6285:
The Nature of Light: Light in Nature
Katherine Creath, Editor(s)

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