Wright Amanda J, Patterson Brett A, Poland Simon P, Girkin John M, Gibson Graham M, Padgett Miles J
Opt Express. 2006 Jan 9;14(1):222-8. doi: 10.1364/opex.14.000222.
A dynamic closed-loop method for focus tracking using a spatial light modulator and a deformable membrane mirror within a confocal microscope is described. We report that it is possible to track defocus over a distance of up to 80 microm with an RMS precision of 57 nm. For demonstration purposes we concentrate on defocus, although in principle the method applies to any wavefront shape or aberration that can be successfully reproduced by the deformable membrane mirror and spatial light modulator, for example, spherical aberration.
描述了一种用于共聚焦显微镜中使用空间光调制器和可变形膜镜进行焦点跟踪的动态闭环方法。我们报告称，有可能在高达80微米的距离上跟踪离焦，均方根精度为57纳米。为了演示目的，我们专注于离焦，尽管原则上该方法适用于可变形膜镜和空间光调制器能够成功再现的任何波前形状或像差，例如球差。
