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Design and characterization of a vibrating piezo-membrane deformable mirror for adaptive optics application

机译:自适应光学应用中振动压电膜可变形镜的设计与表征

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Recently, we proposed an inexpensive deformable mirror made of Poly-Vinylidene Fluoride-(PVDF), called Vibrating Membrane Mirror (VMM), to compensate for optical atmospheric aberrations [1, 2]. The degree of similarity between the vibration mode shapes of a circular membrane and Zernike polynomials were investigated and VMM was introduced as a promising alternative to the traditional deformable mirrors. The present work deals with technical concepts, design, and surface analysis of the proposed deformable mirror. The mode identification, dynamic range, and time response of the proposed mirror is discussed and important factors that influence these parameters are investigated. To measure the mirror surface motion, a Laser Doppler vibrometer is used. Results show that the mechanical performance of the VMM satisfies the basic requirements of an optical deformable mirror. The mirror performance is optically examined in an interferometer setup and recommendations are provided to improve it.
机译:最近,我们提出了一种由聚偏氟乙烯(PVDF)制成的便宜的可变形反射镜,称为振动膜反射镜(VMM),以补偿光学大气像差[1、2]。研究了圆形膜的振动模式形状与Zernike多项式之间的相似程度,并引入了VMM作为传统变形镜的有前途的替代方法。本工作涉及拟议的可变形反射镜的技术概念,设计和表面分析。讨论了所提出反射镜的模式识别,动态范围和时间响应,并研究了影响这些参数的重要因素。为了测量镜面运动,使用了激光多普勒振动计。结果表明,VMM的机械性能满足光学可变形镜的基本要求。在干涉仪设置中对光学镜的性能进行了光学检查,并提供了改进建议。

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