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arXiv · 1107.5586

Spatial coherence of random laser emission

Brandon Redding·Michael A. Choma·Hui Cao
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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.

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Brandon Redding, Michael A. Choma, Hui Cao. 2011-07-27. Spatial coherence of random laser emission. https://doi.org/10.1364/ol.36.003404

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