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

Suppression of phase ambiguity in digital holography by using partial coherence or specimen rotation

Not Accessible

Your library or personal account may give you access

Abstract

In this paper we present two approaches for extracting the surface profile as well as obtaining 3D imaging of near field objects by usage of partial coherence and digital holography. In the first approach a light source with given temporal partial coherence is used to illuminate a near field object. The reflected light is interfered with the reference source. By computing the local contrast of the generated fringes one may estimate the 3D topography and the profile of the object. This approach extracts the 3D information from a single image, and its accuracy does not depend on triangulation angle like in fringe projection methods. The second approach is tomography based. There we illuminate the object from several slightly different angles, and for each we compute the wrapped phase using digital holography techniques. Combining the wrapped phase estimation from several points of projection allows calculating the unwrapped phase and therefore the true profile of even a phase-only object. Increasing the number of points of view decreases the relative error of the estimated profile.

© 2008 Optical Society of America

Full Article  |  PDF Article
More Like This
Fast measurements of concentration profiles inside deformable objects in microflows with reduced spatial coherence digital holography

Christophe Minetti, Natacha Callens, Gwennou Coupier, Thomas Podgorski, and Frank Dubois
Appl. Opt. 47(29) 5305-5314 (2008)

Parallel phase-shifting digital holography using spectral estimation technique

Peng Xia, Yasuhiro Awatsuji, Kenzo Nishio, Shogo Ura, and Osamu Matoba
Appl. Opt. 53(27) G123-G129 (2014)

Phase imaging of cells by simultaneous dual-wavelength reflection digital holography

Alexander Khmaladze, Myung Kim, and Chun-Min Lo
Opt. Express 16(15) 10900-10911 (2008)

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 (8)

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 (8)

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