Laser gain and excited-state absorption measurements in phenylene-vinylene oligomer (1,4-bis-(alpha-cyanostyryl)-2,5-dimethoxybenzene)

Autor:	Steffen Pfeiffer, H. Rost, Hartwig Tillmann, Kevin P. Kretsch, A. Teuschel, Fryad Z. Henari, Werner J. Blau, H. Manaa, Hans-Heinrich Hörhold
Rok vydání:	2000
Předmět:	Chemistry Biophysics Gain Analytical chemistry Absorption cross section General Chemistry Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics Phenylene Excited state Stimulated emission Emission spectrum Triplet state Absorption (electromagnetic radiation)
Zdroj:	Journal of Luminescence. :754-756
ISSN:	0022-2313
DOI:	10.1016/s0022-2313(99)00386-5
Popis:	The pump–probe technique, was used to measure the effective stimulated emission and excited-state absorption cross-sections of phenylene—vinylene oligomer (1,4-bis-(alpha-cyanostyryl)-2,5-dimethoxybenzene) dissolved in toluene for different probe wavelengths. The effective stimulated emission cross-section corresponding to the S 1 →S 0 transition was found to be positive. The possible laser tuning ranges have been determined. Time-resolved excited-state absorption permitted simultaneous measurements of the excited-state absorption cross section and the lifetime of the lowest triplet state T 1 and was found to be of the order of 11 ms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::699071e31899d472d50408f1a325a6ac https://doi.org/10.1016/s0022-2313(99)00386-5 Zobrazit plný text záznamu Full Text from ScienceDirect