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Proceedings Paper

Diffractive-optics-based micromirror scanning system
Author(s): John Barnett Hammond; Thomas J. Suleski; Eric G. Johnson; Charles S. Koehler; John E. Childers; Michael M. Johnson
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Paper Abstract

Most laser projectors for LADAR systems are limited to small scan angles as they utilize acousto-optic devices, spatial light modulators, or fine-steering mirrors for beam steering. Additionally, the projected beam is usually circular and Gaussian. In order to improve the functionality of such systems, MEMS-based mirrors and diffractive optics may be used. This paper describes Digital Optics Corporation's work in developing and demonstrating a novel LADAR scanning system that incorporates a MEMS scanning mirror coupled with diffractive optical elements in a compact breadboard system. The MedCam MEMS mirror has been demonstrated with a 2D scan mode across large scan angles. The MEMS mirror system is experimentally compared to a Liquid Crystal Spatial Light Modulator based system. The diffractive elements generate spot arrays or other patterns that are more conductive to target detection schemes that an ordinary gaussian beam shape.

Paper Details

Date Published: 2 July 1999
PDF: 9 pages
Proc. SPIE 3787, Optical Scanning: Design and Application, (2 July 1999); doi: 10.1117/12.351634
Show Author Affiliations
John Barnett Hammond, Digital Optics Corp. (United States)
Thomas J. Suleski, Digital Optics Corp. (United States)
Eric G. Johnson, Digital Optics Corp. (United States)
Charles S. Koehler, Digital Optics Corp. (United States)
John E. Childers, Digital Optics Corp. (United States)
Michael M. Johnson, MedCam, Inc. (United States)


Published in SPIE Proceedings Vol. 3787:
Optical Scanning: Design and Application
Leo Beiser; Stephen F. Sagan; Gerald F. Marshall, Editor(s)

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