基于lcos的自适应光学元件在显微镜中的应用

A. Hermerschmidt, J. Haffner, T. Haist, W. Osten
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引用次数: 1

摘要

基于硅基液晶(LCoS)的空间光调制器(SLMs)是一种多功能自适应光学元件。在显微镜方面,它们的应用包括宽视场显微镜的像差传感和校正,以及全息光镊的实现。对于像差校正,所需的基于场景的波前传感可以作为一种改进的基于相关的Shack-Hartmann方法来实现,其中高分辨率SLM首先感知然后校正像差。对于全息光镊的实现,SLM作为一个可变的光分束器,在普通PC机的图形处理单元(GPU)上实现快速算法计算全息图,几乎是实时的。
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Applications of LCoS-based adaptive optical elements in microscopy
Liquid crystal on silicon (LCoS)-based spatial light modulators (SLMs) are versatile adaptive optical elements. In microscopy, among their applications are aberration sensing and correction in wide-field microscopy and also the implementation of holographic optical tweezers. For aberration correction, the required scene-based wavefront sensing can be implemented as a modified correlation-based Shack-Hartmann approach where a high-resolution SLM first senses and then corrects the aberrations. For the implementation of holographic optical tweezers, the SLM serves as a variable optical beam-splitter which is addressed with holograms computed by fast algorithms implemented on the graphics processing unit (GPU) of a common PC almost in real-time.
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