Physics – Optics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1271..204a&link_type=abstract
IN: Adaptive optics and optical structures; Proceedings of the Meeting, European Congress on Optics, 3rd, The Hague, Netherlands
Physics
Optics
Actuators, Adaptive Optics, Mirrors, Phase Conjugation, Wave Fronts, Aberration, Algorithms, Boundary Conditions, Computerized Simulation, Optimal Control, Thin Plates
Scientific paper
An analytical model of an active flexible mirror is described in which a thin plate with discrete piezoactuators comprises the proposed mechanism. The model of the adaptive mirror (AM) surface formation is given in terms of the thin-plate theory of the substrate's and actuator's elastic interaction. AM parameters are determined by means of the model as is a numerical simulation of the AM operation in an adaptive optical system (AOS). The AOS control algorithm utilizes orthogonalization of the wavefront sensor to overcome phase distortion in phase conjugation. A Hartmann-type wavefront sensor and a mirrorlike phase corrector with discrete actuators are considered in the numerical simulation of the phase-conjugate AOS. Compensation error in the proposed 19-channel hexagonal-array AM algorithm is found to be between 1.5 and 4 times higher than that required for optimal control in the case of Seidel aberrations.
Apollonov V. V.
Chetkin Sergue A.
Ivanova E. A.
Prokhorov A. M.
Vdovin Gleb V.
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