title: Spatial coherence of random laser emission.
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.
authors: Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA. brandon.redding@yale.edu
authors: Brandon
authors: B
authors: Redding
authors: Michael A
authors: MA
authors: Choma
authors: Hui
authors: H
authors: Cao
mesh_terms: D007834:Lasers; D008163:Luminescent Measurements; D055620:Optical Phenomena