Gratz, H. ; Penzkofer, A.
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | Chemical Physics |
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| Verlag: | ELSEVIER SCIENCE BV |
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| Ort der Veröffentlichung: | AMSTERDAM |
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| Band: | 263 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 2-3 |
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| Seitenbereich: | S. 471-490 |
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| Datum: | 2001 |
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| Institutionen: | Physik > Institut für Experimentelle und Angewandte Physik > Entpflichtete oder im Ruhestand befindliche Professoren > Arbeitsgruppe Alfons Penzkofer |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1016/S0301-0104(00)00355-4 | DOI |
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| Stichwörter / Keywords: | EXCITED-STATE ABSORPTION; PICOSECOND LIGHT-PULSES; LASER EXCITATION; EOSIN-Y; PHOTOPHYSICAL PROPERTIES; DYE SOLUTIONS; MODE-LOCKING; C-70; C-60; SPECTROSCOPY; triplet saturable absorption; triplet-singlet intersystem crossing; triplet-singlet intersystem absorption; triplet photoionization; two-photon absorption; eosin Y; erythrosin B; rose bengal; fullerene molecule C-70 |
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik |
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| Status: | Veröffentlicht |
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| Begutachtet: | Ja, diese Version wurde begutachtet |
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| An der Universität Regensburg entstanden: | Ja |
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| Dokumenten-ID: | 73861 |
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Zusammenfassung
The triplet saturable absorption behaviour of the xanthene dyes eosin Y. erythrosin B- and rose bengal and of the fullerene molecule C-70 is studied. The molecules are excited to the SI-state by intense picosecond pulses (wavelength lambda (P) = 527 nm). They relax dominantly to the triplet system by intersystem crossing. The triplet-triplet saturable absorption is investigated with time-delayed ...
Zusammenfassung
The triplet saturable absorption behaviour of the xanthene dyes eosin Y. erythrosin B- and rose bengal and of the fullerene molecule C-70 is studied. The molecules are excited to the SI-state by intense picosecond pulses (wavelength lambda (P) = 527 nm). They relax dominantly to the triplet system by intersystem crossing. The triplet-triplet saturable absorption is investigated with time-delayed intense picosecond pulses (wavelength lambda (L) = 1054 nm) in the transparency region of the molecules in the singlet ground state. Higher excited-state triplet absorption cross-sections and higher excited-state triplet relaxation times are determined by numerical simulation of the experimental results. Time-resolved fluorescence measurements reveal higher excited-state triplet to singlet back-intersystem-crossing and multi-step tripler photoionization. Additionally the two-photon absorption cross-sections at lambda (L) = 1054 nm are determined by measurement of the fundamental pulse two-photon induced fluorescence relative to the second-harmonic pulse single-photon induced fluorescence. (C) 2001 Elsevier Science B.V. All rights reserved.
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