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  • Vol. 36, Iss. 17 — Sep. 1, 2011
  • pp: 3404–3406

Spatial coherence of random laser emission

Brandon Redding, Michael A. Choma, and Hui Cao  »View Author Affiliations


Optics Letters, Vol. 36, Issue 17, pp. 3404-3406 (2011)
http://dx.doi.org/10.1364/OL.36.003404


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Abstract

We experimentally studied the spatial coherence of random laser emission from dye solutions containing nanoparticles. The spatial coherence, measured in a double slit experiment, varied significantly with the density of scatterers and the size and shape of the excitation volume. A qualitative explanation is provided, illustrating the dramatic difference from the spatial coherence of a conventional laser. This work demonstrates that random lasers can be controlled to provide intense, spatially incoherent emission for applications in which spatial cross talk or speckle limit performance.

© 2011 Optical Society of America

OCIS Codes
(140.2050) Lasers and laser optics : Dye lasers
(290.4210) Scattering : Multiple scattering

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 2, 2011
Revised Manuscript: August 1, 2011
Manuscript Accepted: August 3, 2011
Published: August 26, 2011

Citation
Brandon Redding, Michael A. Choma, and Hui Cao, "Spatial coherence of random laser emission," Opt. Lett. 36, 3404-3406 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-17-3404


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