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Superradiant emission and optical dephasing in J-aggregates

โœ Scribed by Henk Fidder; Jasper Knoester; Douwe A. Wiersma

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
792 KB
Volume
171
Category
Article
ISSN
0009-2614

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Time-resolved difference absorption spectra of J-aggregates were measured by femtosecond pump-probe spectroscopy. The induced absorption near the J-band at 20 K was assigned to the transitions from n-exciton states to ( n + 1 )-exciton states (n 2 1) . The decay time of the n( > 2)-exciton states is