Bansal, A. K. and Holzer, W. and Penzkofer, A. and Kley, E. B. (2008) Spectroscopic and lasing characterisation of a dicarbazovinylene-MEH-benzene dye. OPTICS COMMUNICATIONS, 281 (14). pp. 3806-3819. ISSN 0030-4018,
Full text not available from this repository. (Request a copy)Abstract
The dye 1,4-bis(9-ethyl-3-carbazovinylene)-2-methoxy-5-(2'-ethyl-hexyloxy)-benzene (abbreviated 2CzV-MEH-B) dissolved in tetrahydrofuran (THF) and as neat film is characterised by optical absorption and emission spectroscopy. The absorption and stimulated emission cross-section spectra, the fluorescence quantum distributions, fluorescence quantum yields, degrees of fluorescence polarisation, and fluorescence lifetimes are determined. A lasing characterisation is carried out by pumping with single second harmonic pulses of a mode-locked ruby laser (wavelength 347.15 nm, pulse duration 35 ps). The excited-state absorption at the pump laser wavelength is determined by saturable absorption measurements. Laser oscillation of the dye in THF in a rectangular cell is achieved by transverse pumping using the uncoated cell windows for light feedback. From the emission behaviour around threshold the excited-state absorption cross-section spectrum in the laser active spectral region is extracted. The wave-guided travelling-wave lasing behaviour of the dye as neat film is studied by analysis of the amplification of the transverse pumped spontaneous emission. Surface emitting distributed-feedback lasing was achieved with a neat film on corrugated second-order periodic gratings. (C) 2008 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHOTO-PHYSICAL CHARACTERIZATION; OPTICAL-CONSTANTS MEASUREMENT; LIGHT-EMITTING DEVICES; NEAT FILMS; THIN-FILMS; FLUORESCENCE BEHAVIOR; VIBRONIC RELAXATION; 2-PHOTON ABSORPTION; RHODAMINE 6G; LASER-PULSES; dicarbazovinylene-MEH-benzene dye; ADS084BE light emitting oligomer; neat film; absorption spectroscopy; fluorescence spectroscopy; amplified spontaneous emission; low-Q laser oscillation; travelling-wave lasing; distributed-feedback lasing; saturable absorption; excited-state absorption; fluorescence self-quenching |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Oct 2020 08:51 |
| Last Modified: | 28 Oct 2020 08:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/30619 |
Actions (login required)
 |
View Item |
