Amplified spontaneous emission and efficient tunable laser emission from a substituted thiophene-based oligomer

被引：105

作者：

Pisignano, D

Anni, M

Gigli, G

Cingolani, R

Zavelani-Rossi, M

Lanzani, G

Barbarella, G

Favaretto, L

机构：

[1] INFM, Dipartimento Ingn Innovaz, NNL, I-73100 Lecce, Italy

[2] Politecn Milan, CNR, CEQSE, INFM, I-20133 Milan, Italy

[3] CNR, ICOCEA, Area Ric Bologna, I-40129 Bologna, Italy

[4] Univ Lecce, Dipartimento Fis, I-73100 Lecce, Italy

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 19期

关键词：

D O I：

10.1063/1.1519735

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated gain and lasing in spin-coated films of a soluble substituted oligothiophene. With increasing excitation power, the photoluminescence spectra show a clear line narrowing due to amplified spontaneous emission. We measure a low threshold (20 muJ cm(-2)) for line narrowing and a large gain cross section (6x10(-16) cm(2)), indicating that this molecule is a promising active material for organic solid-state lasers. As a demonstrator, we realize a transverse electromagnetic (TEM00) single-mode laser with tunable emission from the yellow to the red (a range of 37 nm), with a pump threshold as low as 18 muJ cm(-2) and efficiency of 1.9%. These results are among the best so far reported for organic lasers. (C) 2002 American Institute of Physics.

引用

页码：3534 / 3536

页数：3

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