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  <doc>
    <id>1554</id>
    <completedYear>2022</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>34</pageFirst>
    <pageLast>48</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>12</volume>
    <type>article</type>
    <publisherName>Optica Publishing Group</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Microstructuring of the end-surface for silver halide polycrystalline fibers to suppress Fresnel reflection</title>
    <abstract language="eng">Silver halide polycrystalline infrared fibers (PIR) have unique properties such as excellent transmittance in the spectral range from 3 to 17 µm, while also being highly flexible, non-toxic, and non-hygroscopic. They are used in industry and medicine for CO2-laser power delivery, flexible infrared imaging, and remote process spectroscopy. While PIR fibers possess a quite low attenuation (0.1-0.5 dB/m) in the 8-12 µm range, their total transmittance is limited by significant Fresnel reflections at the fiber end faces due to the high refractive index of silver halide (&gt;2.1). Functionalization of these surfaces with specially designed Anti-Reflective Microstructures (ARMs) enables a striking enhancement of fiber transmittance. In this work, direct imprinting (or embossing) of microstructures to fiber ends and their profiling with a microstructured knife was applied to fabricate such ARMs. The resulting two-dimensional Moth-eye microstructures and one-dimensional microgrooves at the PIR-fiber ends enable to an increase of fiber transmittance in a broadband range of (5-17 µm) as well as to reach up to 20% improvement for PIR-fiber laser cables used for power delivery of CO2-lasers at 10.6 µm.</abstract>
    <parentTitle language="eng">Optical Materials Express</parentTitle>
    <identifier type="urn">urn:nbn:de:kobv:526-opus4-15549</identifier>
    <enrichment key="opus.import.date">2021-12-09T12:35:14+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">sword</enrichment>
    <enrichment key="opus.import.file">filename=phptzCzJ7</enrichment>
    <enrichment key="opus.import.checksum">ad8b33642fd9bf9e5066502fd7da0a8b</enrichment>
    <enrichment key="DOI_VoR">https://doi.org/10.1364/OME.439904</enrichment>
    <enrichment key="CopyrightInfo">© 2021 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.</enrichment>
    <enrichment key="SourceTitle">Sonata Adomavičiũtė-Grabusovė, Jonas Hinkel, Iskander Usenov, Alexander S. Novikov, Tatiana Sakharova, Torsten Döhler, Ute Geißler, Elena Feliksberger, and Viacheslav Artyushenko, "Microstructuring of the end-surface for silver halide polycrystalline fibers to suppress Fresnel reflection," Opt. Mater. Express 12, 34-48 (2022)</enrichment>
    <licence>OSA Open Access Publishing Agreement</licence>
    <author>Sonata Adomavičiũtė-Grabusovė</author>
    <author>Jonas Hinkel</author>
    <author>Iskander Usenov</author>
    <author>Alexander S. Novikov</author>
    <author>Tatiana Sakharova</author>
    <author>Torsten Döhler</author>
    <author>Ute Geißler</author>
    <author>Elena Feliksberger</author>
    <author>Viacheslav Artyushenko</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>effective refractive index</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>fresnel reflection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>infrared fiber</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>infrared imaging</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>quantum cascade semiconductor laser</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>refractive index</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">Fachbereich Ingenieur- und Naturwissenschaften</collection>
    <collection role="open_access" number="">open_access</collection>
    <collection role="Import" number="import">Import</collection>
    <collection role="green_open_access" number="1">Gold Open Access</collection>
    <thesisPublisher>Technische Hochschule Wildau</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-th-wildau/files/1554/ome-12-1-34.pdf</file>
  </doc>
</export-example>
