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

被引：28
|
作者：
Rakov, N
de Araújo, CB [1 ]
da Rocha, GB
Simas, AM
Athayde, PAF
Miller, J
机构：
[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
[2] Univ Fed Pernambuco, Dept Quim Fundamental, BR-50670901 Recife, PE, Brazil
[3] Univ Fed Pernambuco, Dept Quim, BR-52171030 Recife, PE, Brazil
[4] Univ Fed Paraiba, Dept Quim, BR-58051970 Joao Pessoa, Paraiba, Brazil
[5] Univ Fed Paraiba, Lab Tecnol Farmaceut, BR-58051970 Joao Pessoa, Paraiba, Brazil
来源：
CHEMICAL PHYSICS LETTERS | 2000年 / 332卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(00)01261-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Intensity dependent transmission and laser-induced fluorescence were observed in liquid solutions of mesoionic compounds (MIC) pumped with nanosecond lasers operating at 1064, 604, and 570 nm. The results indicate that two-photon absorption (TPA) is the dominant mechanism which causes the observed behavior. 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 rights reserved.
引用
收藏
页码：13 / 18
页数：6
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