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Proceedings Paper

A real-time sub-µrad laser beam tracking system
Author(s): Ivo Buske; Ralph Schragner; Wolfgang Riede
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Paper Abstract

We present a rugged and reliable real-time laser beam tracking system operating with a high speed, high resolution piezo-electric tip/tilt mirror. Characteristics of the piezo mirror and position sensor are investigated. An industrial programmable automation controller is used to develop a real-time digital PID controller. The controller provides a one million field programmable gate array (FPGA) to realize a high closed-loop frequency of 50 kHz. Beam tracking with a root-mean-squared accuracy better than 0.15 μrad has been laboratory confirmed. The system is intended as an add-on module for established mechanical mrad tracking systems.

Paper Details

Date Published: 23 October 2007
PDF: 9 pages
Proc. SPIE 6738, Technologies for Optical Countermeasures IV, 67380F (23 October 2007); doi: 10.1117/12.735811
Show Author Affiliations
Ivo Buske, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Ralph Schragner, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Wolfgang Riede, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)

Published in SPIE Proceedings Vol. 6738:
Technologies for Optical Countermeasures IV
David H. Titterton; Mark A. Richardson, Editor(s)

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