1 December 1991 Real-time wavefront correction system using a zonal deformable mirror and a Hartmann sensor
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Abstract
We have developed an adaptive optics system that corrects up to five waves of 2nd-order and 3M-order aberrations in a high-power laser beam to less than 1/10th wave RMS. The wavefront sensor is a Hartmann sensor with discrete lenses and position-sensitive photodiodes; the deformable mirror uses piezoelectric actuators with feedback from strain gauges bonded to the stacks. The controller hardware uses a VMIE bus. The system removes thermally induced aberrations generated in the master-oscillator-power-amplifier chains of a dye laser, as well as aberrations generated in beam combiners and vacuum isolation windows for average output powers exceeding 1 kW. The system bandwidth is 1 Hz, but higher bandwidths are easily attainable.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Thaddeus Salmon, J. Thaddeus Salmon, Erlan S. Bliss, Erlan S. Bliss, Theresa W. Long, Theresa W. Long, Edward L. Orham, Edward L. Orham, Robert W. Presta, Robert W. Presta, Charles D. Swift, Charles D. Swift, Richard L. Ward, Richard L. Ward, "Real-time wavefront correction system using a zonal deformable mirror and a Hartmann sensor", Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); doi: 10.1117/12.48829; https://doi.org/10.1117/12.48829
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