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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 1 — Jan. 9, 2006
  • pp: 222–228

Optics InfoBase > Optics Express > Volume 14 > Issue 1 > Dynamic closed-loop system for focus tracking using a spatial light modulator and a deformable membrane mirror

Dynamic closed-loop system for focus tracking using a spatial light modulator and a deformable membrane mirror

Amanda J. Wright, Brett A. Patterson, Simon P. Poland, John M. Girkin, Graham M. Gibson, and Miles J. Padgett  »View Author Affiliations


Optics Express, Vol. 14, Issue 1, pp. 222-228 (2006)
http://dx.doi.org/10.1364/OPEX.14.000222


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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 μm 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.

© 2006 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(180.0180) Microscopy : Microscopy
(230.4040) Optical devices : Mirrors
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Microscopy

Virtual Issues
Vol. 1, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Amanda J. Wright, Brett A. Patterson, Simon P. Poland, John M. Girkin, Graham M. Gibson, and Miles J. Padgett, "Dynamic closed-loop system for focus tracking using a spatial light modulator and a deformable membrane mirror," Opt. Express 14, 222-228 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-1-222


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