Ultrafast optical responses of the squarylium dye J-aggregates films

被引：18

作者：

Tatsuura, S ^{[1
]}

Furuki, M ^{[1
]}

Tian, M ^{[1
]}

Sato, Y ^{[1
]}

Pu, LS ^{[1
]}

机构：

[1] Fuji Xerox Co Ltd, Corp Res Labs, Nakai, Kanagawa 2590157, Japan

来源：

ORGANIC NONLINEAR OPTICAL MATERIALS AND DEVICES | 1999年 / 561卷

关键词：

D O I：

10.1557/PROC-561-105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

d;Ultrafast optical responses of the organic films containing squarylium dye J-aggregates prepared by simple spincoating method were investigated. Some SQ films exhibited a shall, absorption peak originated from J-aggregates and especially the SQ derivative which has dibutylamino bases at the end of benzene rings forms good J-aggregates in the films without any extra treatment. Time-resolved difference absorption spectra were measured about the SQ44 film. Clear bleached absorption peak and its fast recovery were observed. The decay time was determined to be about 220 fs at 50 MW/cm(2) excitation intensity. Sample preparations and all the measurements were performed in air at room temperature.

引用

页码：105 / 110

页数：6

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