<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>1933</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1562</pageFirst>
    <pageLast>1568</pageLast>
    <pageNumber/>
    <edition/>
    <issue>68</issue>
    <volume>2021</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-07-07</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Laser turning with ultrashort laser pulses</title>
    <abstract language="eng">We report on a comprehensive micromachining study of rotationally symmetric parts using femtosecond laser. A&#13;
laser turning process with tangential impingement of the laser radiation complemented by a trepanning optics is&#13;
implemented as to accomplish a true laser lathe micromachining approach. With the objective of optimized&#13;
ablation rate and reduced surface roughness, the influence of pulse energy, feed rate, trepanning diameter and&#13;
angular beam incidence, respectively, is investigated for processing stellite rods. We find the smallest feasible&#13;
feature sizes of 8.5 μm in diameter and smoothest surfaces with an arithmetic average of the roughness profile as&#13;
low as 0.18 μm. The surface roughness, however, appears to be limited by the occurrence of laser induced periodic&#13;
surface structures provoked by the femtosecond laser radiation. Furthermore, the variation of the fluence&#13;
in accordance to the incidence on a curved surface is discussed and the heat input into the material is examined&#13;
through a longitudinal cross section.</abstract>
    <parentTitle language="eng">Journal of Manufacturing Processes</parentTitle>
    <identifier type="doi">10.1016/j.jmapro.2021.06.025</identifier>
    <enrichment key="copyright">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Julian Zettl</author>
    <author>Maximilian Klar</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrashort laser pulses</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Turning</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ablation rate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Tangential processing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Trepanning optic</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Ultrakurzer Lichtimpuls</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Laserbearbeitung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Mikrobearbeitung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1923</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>282</pageFirst>
    <pageLast>285</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>46</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-01-15</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Enhanced ablation efficiency using GHz bursts in micromachining fused silica</title>
    <parentTitle language="eng">Optics Letters</parentTitle>
    <enrichment key="copyright">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Simon Schwarz</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Mikrobearbeitung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Quarzglas</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1924</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1018</pageFirst>
    <pageLast>1018</pageLast>
    <pageNumber/>
    <edition/>
    <issue>11</issue>
    <volume>2021</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-01-23</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Compact Beam Homogenizer Module with Laser-Fabricated Lens-Arrays</title>
    <parentTitle language="eng">applied sciences</parentTitle>
    <enrichment key="copyright">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Simon Schwarz</author>
    <author>Babette Götzendorfer</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Linse</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Array</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1925</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>23477</pageFirst>
    <pageLast>23486</pageLast>
    <pageNumber/>
    <edition/>
    <issue>15</issue>
    <volume>29</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-07-19</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Ultrashort pulsed laser backside ablation of fused silica</title>
    <parentTitle language="deu">Optics Express</parentTitle>
    <enrichment key="copyright">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Simon Schwarz</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Quarzglas</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Mikrobearbeitung</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
  </doc>
  <doc>
    <id>1585</id>
    <completedYear>2018</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>23287</pageFirst>
    <pageLast>23294</pageLast>
    <pageNumber/>
    <edition/>
    <issue>18</issue>
    <volume>26</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-09-03</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Fabrication of a high-quality axicon by femtosecond laser ablation and CO2 laser polishing for quasi-Bessel beam generation</title>
    <parentTitle language="eng">Optics Express</parentTitle>
    <enrichment key="copyright">0</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Simon Schwarz</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
  </doc>
  <doc>
    <id>1589</id>
    <completedYear>2018</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>90</pageFirst>
    <pageLast>94</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>13</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-09-01</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Homogeneous low spatial frequency LIPSS on dielectric materials generated by beam-shaped femtosecond pulsed laser irradiation</title>
    <parentTitle language="eng">Journal of Laser Micro/Nanoengineering</parentTitle>
    <enrichment key="copyright">0</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Simon Schwarz</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1590</id>
    <completedYear>2020</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>012001</pageFirst>
    <pageLast>012001</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>32</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-02-16</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Rapid fabrication of precise glass axicon arrays by an all laser-based manufacturing technology</title>
    <parentTitle language="eng">Journal of Laser Applications</parentTitle>
    <enrichment key="copyright">0</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Simon Schwarz</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
  </doc>
  <doc>
    <id>1591</id>
    <completedYear>2018</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1624</pageFirst>
    <pageLast>1624</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</issue>
    <volume>8</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-09-12</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Surface Plasmon Polariton Triggered Generation of 1D-Low Spatial Frequency LIPSS on Fused Silica</title>
    <parentTitle language="eng">Applied Sciences</parentTitle>
    <enrichment key="copyright">0</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Simon Schwarz</author>
    <author>Stefan Rung</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Quarzglas</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1571</id>
    <completedYear>2018</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>032016-1</pageFirst>
    <pageLast>032016-6</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>30</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-08-08</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Control of femtosecond laser generated microfluidic channels inside poly (methyl methacrylate)</title>
    <abstract language="eng">In this study, the authors report on femtosecond laser direct generation of microchannels inside poly(methyl methacrylate) with variable dimensions ranging from a channel height of 20 to 350 μm and an aspect ratio down to 1.2. Focused ultrashort laser pulses are used to trigger a material modification in the focal area which can be selectively opened by a subsequent annealing process. A 3D microchannel architecture can easily be realized by moving the specimen using motorized stages, allowing freely chosen complex shaped channel layouts. While the laser wavelength is identified as one of the main parameters determining process effectiveness, another core of this study is the variation of channel dimensions by the numerical aperture of the applied objective to focus the laser. The authors find that both size and shape of the modified region and the resulting microchannel can be controlled by altering the numerical aperture.</abstract>
    <parentTitle language="eng">Journal of Laser Applications</parentTitle>
    <enrichment key="copyright">1</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Gian-Luca Roth</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Polymethylmethacrylate</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1573</id>
    <completedYear>2019</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>022603-1</pageFirst>
    <pageLast>022603-5</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>31</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2019-05-10</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Circular microchannels inside bulk polymethylmethacrylate generated by femtosecond laser using slit beam shaping</title>
    <abstract language="eng">The authors report on the laser generation of three-dimensional microchannel architectures with fundamentally unlimited channel length by focused 514 nm femtosecond laser pulses inside polymethylmethacrylate bulk material. The three-dimensional channel layout is implemented by moving the specimen using three-dimensional motorized stages, allowing freely chosen complex shaped channel architectures. Based on nonlinear absorption of high intensities around the focal volume, a material modification, including a refractive-index shift is triggered. After laser exposure, the channel is created by a gaseous degradation of exposed areas during an annealing process. Cross section and aspect ratio of thus generated microchannels are strongly influenced by the numerical aperture of the applied objective. To obtain a circular cross-sectional shape, high focusing objectives are necessary. In this report, the authors improve the existing setup by using an elliptical input beam, transforming the intensity distribution of the focal area in the propagation direction to a circular shape even for low and medium numerical aperture focusing objectives and therefore avoiding a small working distance as a limiting factor for processing depth. The elliptical input beam is obtained by insertion of a slit mask in front of the focusing objective. The ellipticity of the incident beam defines the aspect ratio of the generated microchannels. Furthermore, the size of internal microchannels is adjustable by varying laser and annealing process parameters.</abstract>
    <parentTitle language="eng">Journal of Laser Applications</parentTitle>
    <enrichment key="copyright">1</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Gian-Luca Roth</author>
    <author>Cemal Esen</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
  </doc>
</export-example>
