19 November 2012 Range-gated imaging with speckle-free and homogeneous laser illumination
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Abstract
Homogeneous and speckle-free laser illumination devices are the key technology for high resolution active imaging and range-gated viewing systems. At ISL, a waveguide technology was developed to effectively reduce laser speckle of solid-state laser sources by a spatial or angular diversity approach, respectively. Further, a distant scene is illuminated with a homogeneous rectangular top-hat profile. In the present publication we give a theoretical description of the waveguide laser illumination devices and present results from ray tracing simulations and experimental investigation.
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Martin Laurenzis, Martin Laurenzis, Jean Michel Poyet, Jean Michel Poyet, Yves Lutz, Yves Lutz, Alexis Matwyschuk, Alexis Matwyschuk, Frank Christnacher, Frank Christnacher, } "Range-gated imaging with speckle-free and homogeneous laser illumination", Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 854203 (19 November 2012); doi: 10.1117/12.971433; https://doi.org/10.1117/12.971433
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