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Optimal Laser Scan Path for Localizing a Fluorescent Particle in Two or Three Dimensions

Published

Author(s)

Gregg M. Gallatin, Andrew J. Berglund

Abstract

Localizing a fluorescent particle by scanning a focused laser in its vicinity and analyzing the detected photon stream provides real-time information for a modern class of feedback control systems for particle tracking and trapping. We present a simple mathematical test to determine whether a particular laser scan path encodes maximal information about a fluorescent particle's position in the detected photon stream. We give the optimal path for a Gaussian laser scanned in two or three dimensions, and present the Cram\'{e}r-Rao bound on the two and three-dimensional localization accuracy that can be achieved by analyzing the detected photon stream.
Citation
Optics Express
Volume
20
Issue
15

Keywords

single particle tracking

Citation

Gallatin, G. and Berglund, A. (2012), Optimal Laser Scan Path for Localizing a Fluorescent Particle in Two or Three Dimensions, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910609 (Accessed April 16, 2024)
Created July 16, 2012, Updated February 19, 2017