Open AccessResponse function calculation and sensitivity comparison analysis of various bimorph deformable mirrors
Author(s) -
Yu Ning,
Wenhan Jiang,
Lixin Ning,
Changhui Rao
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.012030
Subject(s) - bimorph , optics , deformable mirror , displacement (psychology) , materials science , electrode , sensitivity (control systems) , layer (electronics) , voltage , position (finance) , physics , adaptive optics , composite material , electronic engineering , psychology , finance , quantum mechanics , economics , psychotherapist , engineering
Analysis of the response function for various possible bimorph-type deformable mirrors is presented by numerical calculation. Using this response function, sensitivity comparison of a five-layer bimorph with two-and three-layer structures is carried out. It is shown that the displacement of a bimorph deformable mirror surface reduces when the number of layers increases, and the displacement is closely related to the distance of the control layer from the median plane. The farther electrode contributes the larger deformation on the surface. Furthermore, for a fixed position of the control layer, the displacement is directly proportional to the loading voltage and inversely proportional to the square of the thickness of the PZT layer, and it increases about 1.4 times when the area of the electrode doubles.