Amplified spontaneous emission from a soluble thiophene-based oligomer

Authors
Anni, M Gigli, G Cingolani, R Zavelani-Rossi, M Gadermaier, C Lanzani, G Barbarella, G Favaretto, L
Citation
M. Anni et al., Amplified spontaneous emission from a soluble thiophene-based oligomer, APPL PHYS L, 78(18), 2001, pp. 2679-2681
Citations number
31
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
18
Year of publication
2001
Pages
2679 - 2681
Database
ISI
SICI code
0003-6951(20010430)78:18<2679:ASEFAS>2.0.ZU;2-I
Abstract
Optical gain is demonstrated, through pump-probe measurement, in a spin-coa ted film of a quinquethiophene-S,S-dioxide. The temporal evolution of the g ain as a function of the pump intensity shows a progressive shortening of t he lifetime as the pump intensity increases. The photoluminescence spectra show line narrowing for excitation intensity higher than 960 muJ cm(-2). Fr om these measurements, we conclude that oligothiophene-S,S-dioxides are val uable candidates for thin-film organic light amplifier and lasers. (C) 2001 American Institute of Physics.