Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Depth-of-focus reduction for digital in-line holography of particle fields

Not Accessible

Your library or personal account may give you access

Abstract

Poor axial precision caused, in part, by large depth of focus (τ) has been a vexing problem in extraction of particle position from digital in-line holograms. A simple method is proposed to combat this depth-of-focus difficulty. The method is based on decoupling of size and position information. With d,Δ, and λ being particle diameter, CCD pixel size, and the wavelength, respectively, our main theoretical result is the reduction of τ from τd2λ to τΔ2λ for particles of known size. This result is confirmed in laboratory experiments with holograms of calibrated glass spheres.

© 2005 Optical Society of America

Full Article  |  PDF Article
More Like This
Algorithm for reconstruction of digital holograms with adjustable magnification

Fucai Zhang, Ichirou Yamaguchi, and L. P. Yaroslavsky
Opt. Lett. 29(14) 1668-1670 (2004)

Digital in-line holography: influence of the shadow density on particle field extraction

M. Malek, D. Allano, S. Coëtmellec, and D. Lebrun
Opt. Express 12(10) 2270-2279 (2004)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved