Two-photon absorption-induced optical properties of a new lasing dye in two solvents

Citation
D. Wang et al., Two-photon absorption-induced optical properties of a new lasing dye in two solvents, APP PHYS B, 73(3), 2001, pp. 227-231
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS B-LASERS AND OPTICS
ISSN journal
0946-2171 → ACNP
Volume
73
Issue
3
Year of publication
2001
Pages
227 - 231
Database
ISI
SICI code
0946-2171(200109)73:3<227:TAOPOA>2.0.ZU;2-Y
Abstract
Pumped by an infrared lasing and its frequency-doubling source, the fluores cence and superradiance emission properties of a new lasing dye trans-4-[4' -(N,N-diethylamino)-styryl]-N-methyl pyridinium methyl sulfate (abbreviated DEASPS), have been studied in benzyl alcohol and chloroform. The two-photo n absorption (TPA) and emission properties of DEASPS are influenced by the solvents used. The emission wavelength of the dye in benzyl alcohol is reds hifted relative to that in chloroform. The lifetime of two-photon absorptio n-induced fluorescence is about 529 ps in benzyl alcohol, whereas it is 340 ps in chloroform. Correspondingly, the one-photon-excited fluorescence lif etimes in the two solvents are also given. The upconversion efficiency of D EASPS in chloroform is higher than in benzyl alcohol. Finally, the effectiv e molecular two-photon absorption cross-sections were measured by the nonli near transmittance method. It is found that the optical limiting effect of the dye in benzyl alcohol is stronger than that in chloroform.