High-speed, high-sensitivity, gated surface profiling with closed-loop optical coherence topography

Andrei V. Zvyagin, Ilos Eix, David D. Sampson

Research output: Contribution to journalArticle

5 Citations (Scopus)
9 Downloads (Pure)

Abstract

We describe and experimentally demonstrate a novel (to our knowledge) surface profiling technique, for which we propose the term closed-loop optical coherence topography. This technique is a scanning beam, servo-locked variation of low-coherence interferometry. It allows for the sub-wavelengthresolution tracking of a weakly scattering macroscopic-scale surface, with the surface profile being directly output by the controlling electronics. The absence of significant real-time computational overhead makes the technique well suited to high-speed tracking. The use of a micrometer-scale coherence gate efficiently suppresses signals arising from structures not associated with the surface. These features make the technique particularly well suited to real-time surface profiling of in vivo, macroscopic biological surfaces.

Original languageEnglish
Pages (from-to)2179-2184
Number of pages6
JournalApplied Optics
Volume41
Issue number11
DOIs
Publication statusPublished - 1 Jan 2002
Externally publishedYes

Bibliographical note

This paper was published in [Applied optics] and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: [http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-11-2179]. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Fingerprint Dive into the research topics of 'High-speed, high-sensitivity, gated surface profiling with closed-loop optical coherence topography'. Together they form a unique fingerprint.

Cite this