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  Indication of Te segregation in laser-irradiated ZnTe observed by in situ coherent-phonon spectroscopy

Shimada, T., Kamaraju, N., Frischkorn, C., Wolf, M., & Kampfrath, T. (2014). Indication of Te segregation in laser-irradiated ZnTe observed by in situ coherent-phonon spectroscopy. Applied Physics Letters, 105(11): 111908. doi:10.1063/1.4896039.

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 Urheber:
Shimada, Toru1, 2, Autor           
Kamaraju, Natarajan1, 3, Autor           
Frischkorn, Christian4, Autor
Wolf, Martin1, Autor           
Kampfrath, Tobias1, Autor           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Hirosaki University, 1 Bunkyo-cho, Hirosaki, Aomori 036-8152, Japan, ou_persistent22              
3Los Alamos National Laboratory, Center for Integrated Nanotechnologies, Los Alamos, New Mexico 87545, USA, ou_persistent22              
4Department of Physics, Free University of Berlin, Arnimallee 14, 14195 Berlin, Germany , ou_persistent22              

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Schlagwörter: II-VI semiconductors Phonons Materials fabrication Laser materials Multiphoton absorption
 Zusammenfassung: We irradiate a ZnTe single crystal with 10-fs laser pulses at a repetition rate of 80 MHz and investigate its resulting gradual modification by means of coherent-phonon spectroscopy. We observe the emergence of a phonon mode at about 3.6 THz whose amplitude and lifetime grow monotonously with irradiation time. The speed of this process depends sensitively on the pump-pulse duration. Our observations strongly indicate that the emerging phonon mode arises from a Te phase induced by multiphoton absorption of incident laser pulses. A potential application of our findings is laser-machining of microstructures in the bulk of a ZnTe crystal, a highly relevant electrooptic material.

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Sprache(n): eng - English
 Datum: 2014-07-112014-09-062014-09-192014-09-15
 Publikationsstatus: Erschienen
 Seiten: 4
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1063/1.4896039
 Art des Abschluß: -

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Titel: Applied Physics Letters
Genre der Quelle: Zeitschrift
 Urheber:
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Ort, Verlag, Ausgabe: Melville, NY : American Institute of Physics
Seiten: - Band / Heft: 105 (11) Artikelnummer: 111908 Start- / Endseite: - Identifikator: Anderer: 0003-6951
CoNE: https://pure.mpg.de/cone/journals/resource/954922836223