Wittmann, M. and Penzkofer, Alfons (1997) Saturable absorption dynamics of mode-locking dye DODCI. APPLIED PHYSICS B-LASERS AND OPTICS, 65 (6). pp. 761-769. ISSN 0946-2171, 1432-0649
Full text not available from this repository.Abstract
The saturable absorption dynamics of DODCI (3,3'-diethyloxadicarbocyanine iodide) is studied by nonlinear transmission measurements. At 527 nm dye solutions in ethylene glycol and methanol are excited with picosecond pulses. In the wavelength region from 581 nm to 628 nm the dye in ethylene glycol is excited with femtosecond laser pulses. At 626 nm P-isomer-enriched DODCI is studied. The experimental transmission curves are analysed using a decoupled N-isomer and P-isomer S-0-S-1-S-m-S-n multilevel system. An S-m --> S-1 absorption recovery time of tau(A)(S1) = (600 +/- 100) fs is determined. The picosecond and femtosecond pulse excitation leads to S-0 --> S-1 ground-state absorption bleaching and S-1 --> S-m first excited-state absorption bleaching. The excited-state absorption cross-sections sigma(ex)(S1) (S-1 --> S-m) and sigma(ex)(Sm) (S-m --> S-n) are determined.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCITED-STATE; FEMTOSECOND PULSES; P-ISOMERS; LASER; GENERATION; PICOSECOND; RELAXATION; PHOTOISOMERIZATION; ISOMERIZATION; EMISSION |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Mar 2023 11:39 |
| Last Modified: | 01 Mar 2023 11:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50342 |
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