Statistics – Applications
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2443..492c&link_type=abstract
Proc. SPIE Vol. 2443, p. 492-502, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, Inderjit Chopra;
Statistics
Applications
Scientific paper
The influence function of an active optical system defines the relationship between commands to deformable mirror actuators and the changes in wavefront error that result from those commands. Accurate knowledge of the influence function is critical for stable closed-loop operation of the system. A recent program at Itek Optical Systems used a 2.6-meter-diameter, ULE deformable mirror with 144 lead-magnesium-niobate electrostrictive actuators. The influence functions of this mirror were measured under operational conditions over a period of fourteen months and no significant changes in the influence functions were found over that time. This is a very encouraging result for future applications of active optical systems where stable, closed-loop operation is required for many months between remeasurement of influence functions.
Blaszak David D.
Corrigan William H.
Cox Charles D.
Furber Mark E.
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