Nonlinear optical excitations in femtosecond spectroscopy of conjugated polymers
β Scribed by M. Hartmann; M. Schreiber; H.-W. Streitwolf; S. Mukamel
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 381 KB
- Volume
- 66-67
- Category
- Article
- ISSN
- 0022-2313
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π SIMILAR VOLUMES
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
Transient diffraction spectra and their rise and decay dynamics of a thin copper phthalocyanine film ( = 50 nm thickness) were investigated by femtosecond transient grating spectroscopy using a white-light continuum as a probe pulse. Temporal profiles of first-and second-order diffractions were stro