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Optical Engineering • Open Access

Piezoelectric deformable mirror with adaptive multiplexing control
Author(s): Alexey N. Simonov; Song Hong; Gleb V. Vdovin

Paper Abstract

We describe a simple and efficient implementation of adaptive multiplexing control for high-order piezoelectric deformable mirrors. The relatively high capacitance of piezoelectric actuators allows the electrical charge to be stored in a disconnected actuator, retaining its displacement while the other actuators can be addressed. Adaptive multiplexing, consisting of selective addressing of only those actuators that need to change their elongation in the current cycle, improves the mirror performance and simplifies the driver electronics. In experiment, a 12-channel prototype of a deformable mirror with multiplexing control has been characterized. At appropriate update rates with a fixed set of control signals, the shape of the deformable mirror remains nearly constant. A surface displacement error does not exceed ~ λ/100 rms at a multiplexing frequency of 700 Hz with a full interactuator stroke of ~2 µm.

Paper Details

Date Published: 1 July 2006
PDF: 3 pages
Opt. Eng. 45(7) 070501 doi: 10.1117/1.2219733
Published in: Optical Engineering Volume 45, Issue 7
Show Author Affiliations
Alexey N. Simonov, Technische Univ. Delft (Netherlands)
Song Hong, Technische Univ. Delft (Netherlands)
Gleb V. Vdovin, Technische Univ. Delft (Netherlands)

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