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  <doc>
    <id>4075</id>
    <completedYear/>
    <publishedYear>2003</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Optical Society of America</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Femtosecond X-ray Diffraction Study of Large Amplitude Coherent Optical Phonons in Laser-Excited Bismuth</title>
    <abstract language="eng">Femtosecond time-resolved X-ray diffraction was used to directly study optical phonons in laser-excited Bismuth. A periodic modulation of the diffraction efficiency reveals initially coherent lattice distortions with atomic displacements of nearly 10% of the nearest- neighbor-distance.</abstract>
    <parentTitle language="eng">Conference on Lasers and Electro-Optics, 1–6 June 2003, Baltimore, Maryland</parentTitle>
    <identifier type="url">https://opg.optica.org/abstract.cfm?uri=cleo-2003-CMZ6</identifier>
    <enrichment key="opus.import.date">2022-06-07T14:31:45+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Klaus Sokolowski-Tinten</author>
    <author>Christian Blome</author>
    <author>Juris Blums</author>
    <author>Clemens Dietrich</author>
    <author>Alexander Tarsevitch</author>
    <author>Michael Horn-von Hoegen</author>
    <author>Dietrich von der Linde</author>
    <author>Andrea Cavalleri</author>
    <author>Martin Kammler</author>
    <author>Ingo Uschmann</author>
    <author>Eckhart Foerster</author>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Nanoanalytik und Halbleiterchemie (Nanochem)</collection>
  </doc>
  <doc>
    <id>4076</id>
    <completedYear/>
    <publishedYear>2003</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>287</pageFirst>
    <pageLast>289</pageLast>
    <pageNumber/>
    <edition/>
    <issue>6929</issue>
    <volume>422</volume>
    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Femtosecond X-ray measurement of coherent lattice vibrations near the Lindemann stability limit</title>
    <abstract language="eng">The study of phase-transition dynamics in solids beyond a time-averaged kinetic description requires direct measurement of the changes in the atomic configuration along the physical pathways leading to the new phase. The timescale of interest is in the range 10(-14) to 10(-12) s. Until recently, only optical techniques were capable of providing adequate time resolution, albeit with indirect sensitivity to structural arrangement. Ultrafast laser-induced changes of long-range order have recently been directly established for some materials using time-resolved X-ray diffraction. However, the measurement of the atomic displacements within the unit cell, as well as their relationship with the stability limit of a structural phase, has to date remained obscure. Here we report time-resolved X-ray diffraction measurements of the coherent atomic displacement of the lattice atoms in photoexcited bismuth close to a phase transition. Excitation of large-amplitude coherent optical phonons gives rise to a periodic modulation of the X-ray diffraction efficiency. Stronger excitation corresponding to atomic displacements exceeding 10 per cent of the nearest-neighbour distance-near the Lindemann limit-leads to a subsequent loss of long-range order, which is most probably due to melting of the material.</abstract>
    <parentTitle language="eng">Nature</parentTitle>
    <identifier type="doi">10.1038/nature01490</identifier>
    <enrichment key="opus.import.date">2022-06-07T14:31:45+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Klaus Sokolowski-Tinten</author>
    <author>Christian Blome</author>
    <author>Juris Blums</author>
    <author>Andrea Cavalleri</author>
    <author>Clemens Dietrich</author>
    <author>Alexander Tarasevitch</author>
    <author>Ingo Uschmann</author>
    <author>Eckhard Förster</author>
    <author>Martin Kammler</author>
    <author>Michael Horn-von Hoegen</author>
    <author>Dietrich von der Linde</author>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Nanoanalytik und Halbleiterchemie (Nanochem)</collection>
  </doc>
  <doc>
    <id>4088</id>
    <completedYear/>
    <publishedYear>2002</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>115</pageFirst>
    <pageLast>116</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>IEEE</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Structural dynamics in laser-excited solids investigated with femtosecond x-ray diffraction</title>
    <abstract language="eng">Summary form only given. Ultrashort x-ray pulses offer a unique combination of atomic-scale spatial and temporal resolution, which permits direct measurements of structural transients on an ultrafast time scale. Using time-resolved X-ray diffraction with femtosecond, multi-keV X-ray pulses we have studied transient lattice dynamics in optically excited semiconductors.</abstract>
    <parentTitle language="eng">2002 Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, 19-24 May 2002, Long Beach, CA, USA</parentTitle>
    <identifier type="doi">10.1109/QELS.2002.1031182</identifier>
    <enrichment key="opus.import.date">2022-06-07T14:31:45+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Klaus Sokolowski-Tinten</author>
    <author>Christian Blome</author>
    <author>Clemens Dietrich</author>
    <author>Juris Blums</author>
    <author>Michael Horn-von Hoegen</author>
    <author>D. von der Linde</author>
    <author>Andrea Cavalleri</author>
    <author>Jeff A. Squier</author>
    <author>Martin Kammler</author>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Nanoanalytik und Halbleiterchemie (Nanochem)</collection>
  </doc>
  <doc>
    <id>4072</id>
    <completedYear/>
    <publishedYear>2005</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>170</pageFirst>
    <pageLast>174</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>79</volume>
    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Ultrafast X-ray diffraction</title>
    <abstract language="eng">In the last few years the generation of femtosecond pulses in the X-ray regime has become possible. These ultrashort X-ray pulses have enabled femtosecond time- resolution to be extended to X-rays.</abstract>
    <parentTitle language="deu">Ultrafast Phenomena XIV</parentTitle>
    <identifier type="doi">10.1007/3-540-27213-5_53</identifier>
    <enrichment key="opus.import.date">2022-06-07T14:31:45+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <enrichment key="OtherSeries">Springer Series in Chemical Physics , 79</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Klaus Sokolowski-Tinten</author>
    <author>Christian Blome</author>
    <author>Juris Blums</author>
    <author>Uladzimir Shymanovich</author>
    <author>Matthieu Nicoul</author>
    <author>Andrea Cavalleri</author>
    <author>A. Tarasevitch</author>
    <author>Michael Horn-von Hoegen</author>
    <author>Martin Kammler</author>
    <author>D. von der Linde</author>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Nanoanalytik und Halbleiterchemie (Nanochem)</collection>
  </doc>
  <doc>
    <id>4105</id>
    <completedYear/>
    <publishedYear>2004</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>170</pageFirst>
    <pageLast>174</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>79</volume>
    <type>conferenceobject</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Berlin, Heidelberg</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Ultrafast X-ray diffraction</title>
    <abstract language="eng">In the last few years the generation of femtosecond pulses in the X-ray regime has become possible. These ultrashort X-ray pulses have enabled femtosecond time- resolution to be extended to X-rays.</abstract>
    <parentTitle language="eng">Ultrafast Phenomena XIV</parentTitle>
    <identifier type="isbn">978-3-540-27213-7</identifier>
    <identifier type="doi">10.1007/3-540-27213-5_53</identifier>
    <enrichment key="opus.import.date">2022-06-07T14:31:45+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <enrichment key="OtherSeries">Springer Series in Chemical Physics ; 79</enrichment>
    <enrichment key="ConferenceStatement">Proceedings of the 14th International Conference, Niigata, Japan, July 25--30, 2004</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Klaus Sokolowski-Tinten</author>
    <author>Christian Blome</author>
    <author>Juris Blums</author>
    <author>Uladzimir Shymanovich</author>
    <author>Matthieu Nicoul</author>
    <author>Andrea Cavalleri</author>
    <author>A. Tarasevitch</author>
    <author>Michael Horn-von Hoegen</author>
    <author>Martin Kammler</author>
    <author>Dietrich von der Linde</author>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Nanoanalytik und Halbleiterchemie (Nanochem)</collection>
  </doc>
</export-example>
