RESONANT DEGENERATE 4-WAVE-MIXING AND SCALING LAWS FOR SATURABLE ABSORPTION IN THIN-FILMS OF CONJUGATED POLYMERS AND RHODAMINE-6G

被引：33

作者：

BUBECK, C

KALTBEITZEL, A

GRUND, A

LECLERC, M

机构：

[1] Max-Planck-Institut für Polymerforschung, W-6500 Mainz

来源：

CHEMICAL PHYSICS | 1991年 / 154卷 / 02期

关键词：

D O I：

10.1016/0301-0104(91)80084-U

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：

Wavelength dispersed degenerate four wave mixing (DFWM) experiments were performed with thin films of poly(3-decylthiophene), poly(p-phene vinylene) and Rhodamine 6G. At the low energy side of the main absorption bands the resonant chi(3) (-omega; omega, omega, -omega) values scale differently with the absorption coefficient-alpha. In Rhodamine 6G, chi(3) is proportional to alpha-2 due to saturable absorption in a two level system. In the case of polymers with a conjugated one-dimensional pi-electron system a linear relationship between chi(3) and alpha is found. This is attributed to phase-space filling effects by one-dimensional excitons.

引用

页码：343 / 348

页数：6