Saturable absorption in poly(indenofluorene): A picket-fence polymer

被引：57

作者：

Samoc, M ^{[1
]}

Samoc, A

Luther-Davies, B

Reisch, H

Scherf, U

机构：

[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Australian Photon Cooperat Res Ctr, Laser Phys Ctr, Canberra, ACT 0200, Australia

[2] Max Planck Inst Polymerforsch, Mainz, Germany

来源：

OPTICS LETTERS | 1998年 / 23卷 / 16期

关键词：

D O I：

10.1364/OL.23.001295

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Poly(indenofluorene) shows a strong degenerate four-wave mixing (DFWM) response when it is excited with 100-fs pulses at 800 nm. The DFWM signal scales with the 1.5 power of the input intensity, which we interpret as being due to absorption saturation phenomena. The saturation was studied by open-aperture Z scan in dilute solutions of poly(indenofluorene) in chloroform. The changes in the absorption coefficient cu are described by the formula alpha = alpha(0)[1 + (I/I-sat)(1/2)], where I-sat is the saturation intensity, which is found to be of the order of 100 MW/cm(2). (C) 1998 Optical Society of America.

引用

页码：1295 / 1297

页数：3

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