Amplified spontaneous emission and lasing properties of bisfluorene-cored dendrimers

被引：75

作者：

Ribierre, J. C.

Tsiminis, G.

Richardson, S.

Turnbull, G. A.

Samuel, I. D. W. ^{[1
]}

Barcena, H. S.

Burn, P. L.

机构：

[1] Univ St Andrews, Organ Semicond Ctr & Ultrafast Photon Colloborat, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[2] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England

[3] Univ Queensland, Ctr Organ Photon & Elect, St Lucia, Qld 4072, Australia

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.2761833

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A study of the amplified spontaneous emission (ASE) properties of three bisfluorene-cored dendrimers in the solid state is reported. The results show that the dendron type has a strong impact on the photoluminescence quantum yield and affects the ASE threshold, the optical gain, and loss coefficients. Optically pumped distributed feedback lasers operating in the blue spectral region were fabricated by spin coating the dendrimer films on top of a two-dimensional corrugated fused silica substrate. A best lasing threshold of 4.5 mu J/cm(2) and a slope efficiency of 8.3% were obtained, which demonstrate the high potential of these materials for laser applications. (c) 2007 American Institute of Physics.

引用

页数：3

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