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Ultrafast Optical Responses of the Squarylium Dye J-Aggregates Films

Published online by Cambridge University Press:  10 February 2011

S. Tatsuura ,
M. Furuki ,
M. Tian ,
Y. Sato  and
L.S. Pu
S. Tatsuura
Affiliation:
Corporate Res. Labs., Fuji Xerox Co., Ltd., 430 Sakai, Nakai-machi, Kanagawa 259-0157, Japan, [email protected]
M. Furuki
Affiliation:
FESTA Laboratories, 5-5 Tokodai, Tsukuba 300-2635, Japan
M. Tian
Affiliation:
Corporate Res. Labs., Fuji Xerox Co., Ltd., 430 Sakai, Nakai-machi, Kanagawa 259-0157, Japan
Y. Sato
Affiliation:
Corporate Res. Labs., Fuji Xerox Co., Ltd., 430 Sakai, Nakai-machi, Kanagawa 259-0157, Japan
L.S. Pu
Affiliation:
Corporate Res. Labs., Fuji Xerox Co., Ltd., 430 Sakai, Nakai-machi, Kanagawa 259-0157, Japan
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Abstract

Ultrafast optical responses of the organic films containing squaryliurn dye J-aggregates prepared by simple spincoating method were investigated. Some SQ films exhibited a sharp 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/cm2 excitation intensity. Sample preparations and all the measurements were performed in air at room temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 561: Symposium F – Organic Nonlinear Optical Materials and Devices , 1999 , 105
Copyright
Copyright © Materials Research Society 1999

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References

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