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Optical Engineering

Homogeneous and speckle-free laser illumination for range-gated imaging and active polarimetry
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Paper Abstract

We present simple illumination devices with built-in speckle reduction using the spatial diversity approach. These devices are based on a waveguide homogenization technique with a transmission efficiency of up to 95%. Even for single-laser pulse illumination from a solid-state laser source a reduction of the speckle contrast by a factor of 4.5 was demonstrated. In detail, we present two different illumination devices based on either a solid-state laser source or an array of semiconductor laser diodes. These illumination devices are used for range-gated imaging and active polarimetry with speckle-free and homogeneous illumination.

Paper Details

Date Published: 7 May 2012
PDF: 9 pages
Opt. Eng. 51(6) 061302 doi: 10.1117/1.OE.51.6.061302
Published in: Optical Engineering Volume 51, Issue 6
Show Author Affiliations
Martin Laurenzis, Institut Franco-Allemand de Recherches de Saint-Louis (France)
Yves Lutz, Institut Franco-Allemand de Recherches de Saint-Louis (France)
Frank Christnacher, Institut Franco-Allemand de Recherches de Saint-Louis (France)
Alexis Matwyschuk, Institut Franco-Allemand de Recherches de Saint-Louis (France)
Jean-Michel Poyet, Institut Franco-Allemand de Recherches de Saint-Louis (France)


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