Wavelength dependent nonlinear optical properties of pseudoisocyanine J-aggregates
β Scribed by R. Gadonas; K.-H. Feller; A. Pugzlys
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 383 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0030-4018
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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
Temperature-dependent nonlinear optical properties including the real part, imaginary part and the magnitude of effective nonlinear optical susceptibility c e in metal/dielectric composites are studied by means of the decoupling approximation and spectral representation. The variation of these physi