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.

3 pages, 3 figures

References in corpus (4)

• Strong Interactions in Multimode Random Lasers
• Supporting Online Material for "Strong Interactions in Multimode Random Lasers"
• Mode Repulsion and Mode Coupling in Random Lasers
• Theory for the photon statistics of random lasers

Cited by in corpus (16)

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• Complex Lasers with Controllable Coherence
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• Electrically driven random lasing from a modified Fabry-Perot laser diode
• Accelerating speckle suppression by a degenerate cavity laser with an intracavity phase diffuser
• Photodegradation and self-healing in a Rhodamine 6G dye and Y${}_2$O${}_3$ nanoparticle-doped polyurethane random laser
• Electrically pumped semiconductor laser with low spatial coherence and directional emission
• Self-healing organic-dye-based random lasers
• Random Lasing and Reversible Photodegradation in Disperse Orange 11 Dye-Doped PMMA with Dispersed ZrO${}_2$ Nanoparticles
• Fluctuations and Correlations of Emission from Random Lasers
• Controlling mode competition by tailoring the spatial pump distribution in a laser: A resonance-based approach
• Discrete Anderson Speckle
• Tracking nanoscale perturbation in active disordered media
• Revisiting self-seeding mechanism by generating vector ultraviolet N${}_2^{+}$ lasing