23 October 2007 A real-time sub-μrad laser beam tracking system
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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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ivo Buske, Ivo Buske, Ralph Schragner, Ralph Schragner, Wolfgang Riede, Wolfgang Riede, } "A real-time sub-μrad laser beam tracking system", Proc. SPIE 6738, Technologies for Optical Countermeasures IV, 67380F (23 October 2007); doi: 10.1117/12.735811; https://doi.org/10.1117/12.735811


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