Amplified spontaneous emission in α-phase and β-phase polyfluorene waveguides

被引：24

作者：

Azuma, Hironobu ^{[1
]}

Kobayashi, Takashi ^{[1
]}

Shim, Yonggu ^{[1
]}

Mamedov, Nazim ^{[1
]}

Naito, Hiroyoshi ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Dept Phys & Elect, Sakai, Osaka 5998531, Japan

来源：

ORGANIC ELECTRONICS | 2007年 / 8卷 / 2-3期

基金：

日本学术振兴会;

关键词：

amplified spontaneous emission; polyfluorene; spectroscopic ellipsometry; THIN-FILMS; LASERS; GAIN;

D O I：

10.1016/j.orgel.2007.01.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amplified spontaneous emission (ASE) of alpha- and beta-phase poly(9,9-dioctylfluorene) (F8) based waveguides has been studied and ASE wavelengths have been determined as 451 nm and 468 nm, respectively. beta-phase waveguides are found to be with higher net gain and lower light propagation loss as compared to alpha-phase waveguides. Such important improvement of ASE properties, making beta-phase waveguides superior over alpha-phase counterparts is shown to be achieved at the expense of higher refractive index and photoluminescence quantum efficiency of beta-phase F8. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：184 / 188

页数：5

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