2 October 2008 3D imaging with range gated laser systems using speckle reduction techniques to improve the depth accuracy
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Proceedings Volume 7113, Electro-Optical and Infrared Systems: Technology and Applications V; 711307 (2008); doi: 10.1117/12.799740
Event: SPIE Security + Defence, 2008, Cardiff, Wales, United Kingdom
Abstract
We present the 3D-imaging of a target using range gated laser systems operating at 1.5 μm. Two different illumination techniques were investigated: 1) a conventional illumination technique consisting of a Raman-shifted Nd:YAG laser with a fixed wavelength, and 2) a technique which makes use of a wavelength-tunable illumination source consisting of a Nd:YAG-pumped OPO. We compare the influence of each illumination technique on target induced speckle effects and the resulting range resolution. Image samples were taken at ranges of up to 2.5 km.
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B. Göhler, P. Lutzmann, G. Anstett, "3D imaging with range gated laser systems using speckle reduction techniques to improve the depth accuracy", Proc. SPIE 7113, Electro-Optical and Infrared Systems: Technology and Applications V, 711307 (2 October 2008); doi: 10.1117/12.799740; https://doi.org/10.1117/12.799740
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KEYWORDS
Speckle

Optical parametric oscillators

Turbulence

Sensors

Speckle pattern

Cameras

Imaging systems

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