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

Multiwavelength phase unwrapping and aberration correction using depth filtered digital holography

Not Accessible

Your library or personal account may give you access

Abstract

In this Letter, we present a new approach to processing data from a standard spectral domain optical coherence tomography (OCT) system using depth filtered digital holography (DFDH). Intensity-based OCT processing has an axial resolution of the order of a few micrometers. When the phase information is used to obtain optical path length differences, subwavelength accuracy can be achieved, but this limits the resolvable step heights to half of the wavelength of the system. Thus there is a metrology gap between phase- and intensity-based methods. Our concept addresses this metrology gap by combining DFHD with multiwavelength phase unwrapping. Additionally, the measurements are corrected for aberrations. Here, we present proof of concept measurements of a structured semiconductor sample.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Depth-filtered digital holography

Nektarios Koukourakis, Volker Jaedicke, Adamou Adinda-Ougba, Sebastian Goebel, Helge Wiethoff, Henning Höpfner, Nils C. Gerhardt, and Martin R. Hofmann
Opt. Express 20(20) 22636-22648 (2012)

Single-shot dual-wavelength phase unwrapping in parallel phase-shifting digital holography

Yonghee Lee, Yasunori Ito, Tatsuki Tahara, Junichi Inoue, Peng Xia, Yasuhiro Awatsuji, Kenzo Nishio, Shogo Ura, and Osamu Matoba
Opt. Lett. 39(8) 2374-2377 (2014)

Recovering correct phase information in multiwavelength digital holographic microscopy by compensation for chromatic aberrations

S. De Nicola, A. Finizio, G. Pierattini, D. Alfieri, S. Grilli, L. Sansone, and P. Ferraro
Opt. Lett. 30(20) 2706-2708 (2005)

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 (4)

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 (7)

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