Spatial coherence of random laser emission

Details Spatial coherence of random laser emission Spatial coherence of random laser emission

2011-07-27

arxiv.org/abs/1107.5586v1

Physics

Optics

3 pages, 3 figures

Scientific paper

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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