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Proceedings Paper

Coherent image synthesis using a Shack-Hartmann wavefront sensor
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Paper Abstract

It has been suggested that high resolution images of laser illuminated objects can be digitally synthesized from measurements of the wavefront slope (gradient) associated with the backscattered laser-speckle field. We describe the image synthesis procedure and present images reconstructed from computer simulated laser-speckle fields. Noise was added to simulated wavefront-difference measurements to illustrate the effect on the imagery. We also describe a Shack-Hartmann type of wavefront sensor that was designed and built at the Weapons Laboratory and initially used to investigate the distribution of ray directions in a speckle field. Imaging results obtained with the sensor in the laboratory are presented and we describe an adaptation of the basic imaging technique that can be used to image coherently illuminated objects through optical phase distortions.

Paper Details

Date Published: 1 November 1990
PDF: 7 pages
Proc. SPIE 1351, Digital Image Synthesis and Inverse Optics, (1 November 1990); doi: 10.1117/12.23683
Show Author Affiliations
David G. Voelz, Weapons Lab. (United States)
John D. Gonglewski, Weapons Lab. (United States)
Paul S. Idell, Weapons Lab. (United States)
David Charles Dayton, Applied Technology Associates, Inc. (United States)

Published in SPIE Proceedings Vol. 1351:
Digital Image Synthesis and Inverse Optics
Arthur F. Gmitro; Paul S. Idell; Ivan J. LaHaie, Editor(s)

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