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dc.contributor.author
Mavrona, Elena
dc.contributor.author
Hu, Yijie
dc.contributor.author
de Freitas Siqueira, Gilberto
dc.contributor.author
Rüggeberg, Markus
dc.contributor.author
Popov, Sergei
dc.contributor.author
Berglund, Lars A.
dc.contributor.author
Hack, Erwin
dc.contributor.author
Nyström, Gustav
dc.contributor.author
Zolliker, Peter
dc.date.accessioned
2023-01-26T14:18:50Z
dc.date.available
2023-01-25T04:43:45Z
dc.date.available
2023-01-26T14:18:50Z
dc.date.issued
2023-01-01
dc.identifier.issn
2159-3930
dc.identifier.other
10.1364/OME.477062
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/594618
dc.description.abstract
Polarized THz time domain spectroscopy was used to study the anisotropic properties of wood-based materials for potential optical elements in the THz range, such as half-wave and quarter-wave plates. Wood samples of different species and sample thickness were studied experimentally showing high birefringence but rather high absorption. We elaborate on two approaches to optimize the optical properties for use as wave plates and assess them based on a figure of merit describing their efficiency as a function of birefringence and absorption. The first approach is to dry the wood samples, which significantly improves the efficiency of wave plates. The second approach is the use of artificially produced cellulose samples using 3D printing and freeze drying techniques, which also show birefringence caused by their similar macroscopic cellulose fibre structure. These materials have the potential as cost effective THz elements that are easy to tailor and produce for use at specific frequencies.
en_US
dc.language.iso
en
en_US
dc.publisher
Optica
en_US
dc.title
Efficiency assessment of wood and cellulose-based optical elements for terahertz waves
en_US
dc.type
Journal Article
dc.date.published
2022-12-13
ethz.journal.title
Optical Materials Express
ethz.journal.volume
13
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
Opt. Mater. Express
ethz.pages.start
92
en_US
ethz.pages.end
103
en_US
ethz.identifier.wos
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2023-01-25T04:43:46Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2023-01-26T14:18:51Z
ethz.rosetta.lastUpdated
2023-01-26T14:18:51Z
ethz.rosetta.versionExported
true
ethz.COinS
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