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Low-frequency noise effect on terahertz tomography using thermal detectors

Guillet, Jean-Paul; Recur, Benoit; Balacey, Hugo; Bou Sleiman, J; Darracq, F; Lewis, D; Mounaix, Patrick

Description

In this paper, the impact of low-frequency noise on terahertz-computed tomography (THz-CT) is analyzed for several measurement configurations and pyroelectric detectors. We acquire real noise data from a continuous millimeter-wave tomographic scanner in order to figure out its impact on reconstructed images. Second, noise characteristics are quantified according to two distinct acquisition methods by (i) extrapolating from experimental acquisitions a sinogram for different noise backgrounds and...[Show more]

dc.contributor.authorGuillet, Jean-Paul
dc.contributor.authorRecur, Benoit
dc.contributor.authorBalacey, Hugo
dc.contributor.authorBou Sleiman, J
dc.contributor.authorDarracq, F
dc.contributor.authorLewis, D
dc.contributor.authorMounaix, Patrick
dc.date.accessioned2016-06-14T23:20:16Z
dc.identifier.issn0003-6935
dc.identifier.urihttp://hdl.handle.net/1885/103287
dc.description.abstractIn this paper, the impact of low-frequency noise on terahertz-computed tomography (THz-CT) is analyzed for several measurement configurations and pyroelectric detectors. We acquire real noise data from a continuous millimeter-wave tomographic scanner in order to figure out its impact on reconstructed images. Second, noise characteristics are quantified according to two distinct acquisition methods by (i) extrapolating from experimental acquisitions a sinogram for different noise backgrounds and (ii) reconstructing the corresponding spatial distributions in a slice using a CT reconstruction algorithm. Then we describe the low-frequency noise fingerprint and its influence on reconstructed images. Thanks to the observations, we demonstrate that some experimental choices can dramatically affect the 3D rendering of reconstructions. Thus, we propose some experimental methodologies optimizing the resulting quality and accuracy of the 3D reconstructions, with respect to the low-frequency noise characteristics observed during acquisitions.
dc.publisherOptical Society of America
dc.sourceApplied Optics
dc.titleLow-frequency noise effect on terahertz tomography using thermal detectors
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume54
dc.date.issued2015
local.identifier.absfor020405 - Soft Condensed Matter
local.identifier.absfor020406 - Surfaces and Structural Properties of Condensed Matter
local.identifier.absfor030603 - Colloid and Surface Chemistry
local.identifier.ariespublicationU3488905xPUB6121
local.type.statusPublished Version
local.contributor.affiliationGuillet, Jean-Paul, Université de Bordeaux
local.contributor.affiliationRecur, Benoit, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBalacey, Hugo, Bordeaux University
local.contributor.affiliationBou Sleiman, J, Bordeaux University
local.contributor.affiliationDarracq, F, Bordeaux University
local.contributor.affiliationLewis, D, Bordeaux University
local.contributor.affiliationMounaix, Patrick, Université de Bordeaux
local.description.embargo2037-12-31
local.bibliographicCitation.issue22
local.bibliographicCitation.startpage6758
local.bibliographicCitation.lastpage6762
local.identifier.doi10.1364/AO.54.006758
dc.date.updated2016-06-14T08:47:21Z
local.identifier.scopusID2-s2.0-84942373491
CollectionsANU Research Publications

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