Dendrimer molecules with record large two-photon absorption cross section

被引：227

作者：

Drobizhev, M ^{[1
]}

Karotki, A

Rebane, A

Spangler, CW

机构：

[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[2] PN Lebedev Phys Inst, Moscow 117924, Russia

[3] Montana State Univ, Dept Chem, Bozeman, MT 59717 USA

来源：

OPTICS LETTERS | 2001年 / 26卷 / 14期

关键词：

D O I：

10.1364/OL.26.001081

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report what is to our knowledge a record high value for an intrinsic two-photon absorption (TPA) cross section, sigma (2) = 11 x 10(-47) cm(4) s photon(-1) molecule(-1), measured with femtosecond pulses in a new dendrimer molecule comprising 29 repeat units of 4,4 ' -bis(diphenylamino)stilbene chromophore. We measure the dependence of TPA on excitation wavelength in three consecutive generations of the dendrimer and show that the maximum sigma (2) value increases faster than the total number of stilbene chromophores. This result indicates that it is possible to obtain even larger sigma (2) values in higher generations of this dendrimer family. (C) 2001 Optical Society of America.

引用

页码：1081 / 1083

页数：3

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