Real-time wavefront correction system using a zonal deformable mirror and a Hartmann sensor

J. Thaddeus Salmon; Erlan S. Bliss; Theresa W. Long; Edward L. Orham; Robert W. Presta; Charles D. Swift; Richard L. Ward

doi:10.1117/12.48829

1 December 1991 Real-time wavefront correction system using a zonal deformable mirror and a Hartmann sensor

J. Thaddeus Salmon, Erlan S. Bliss, Theresa W. Long, Edward L. Orham, Robert W. Presta, Charles D. Swift, Richard L. Ward

Author Affiliations +

Proceedings Volume 1542, Active and Adaptive Optical Systems; (1991) https://doi.org/10.1117/12.48829
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

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J. Thaddeus Salmon, Erlan S. Bliss, Theresa W. Long, Edward L. Orham, Robert W. Presta, Charles D. Swift, and 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); https://doi.org/10.1117/12.48829

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