| Literature DB >> 19503333 |
Amanda J Wright, Brett A Patterson, Simon P Poland, John M Girkin, Graham M Gibson, Miles J Padgett.
Abstract
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.Year: 2006 PMID： 19503333 DOI： 10.1364/opex.14.000222
Source DB: PubMed Journal: Opt Express ISSN： 1094-4087 Impact factor: 3.894