Two-photon absorption in mesoionic compounds pumped at the visible and at the infrared

Authors
Rakov, N de Araujo, CB da Rocha, GB Simas, AM Athayde, PAF Miller, J
Citation
N. Rakov et al., Two-photon absorption in mesoionic compounds pumped at the visible and at the infrared, CHEM P LETT, 332(1-2), 2000, pp. 13-18
Citations number
19
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
332
Issue
1-2
Year of publication
2000
Pages
13 - 18
Database
ISI
SICI code
0009-2614(200012)332:1-2<13:TAIMCP>2.0.ZU;2-3
Abstract
Intensity dependent transmission and laser-induced fluorescence were observ ed in liquid solutions of mesoionic compounds (MIC) pumped with nanosecond lasers operating at 1064, 604, and 570 nm. The results indicate that two-ph oton absorption (TPA) is the dominant mechanism which causes the observed b ehavior. The TPA cross-sections measured have values from 0.33 x 10(-20) cm (4)/GW to 0.43 x 10(-18) cm(4)/GW. (C) 2000 Elsevier Science B.V. All right s reserved.