Low-loss and highly polarized emission from planar polymer waveguides

被引：9

作者：

Camposeo, A ^{[1
]}

Mele, E ^{[1
]}

Persano, L ^{[1
]}

Pisignano, D ^{[1
]}

Cingolani, R ^{[1
]}

机构：

[1] Univ Lecce, Natl Nanotechnol Lab, CNR, INFM,Distretto Tecnol ISUFI, I-73100 Lecce, Italy

来源：

OPTICS LETTERS | 2006年 / 31卷 / 10期

关键词：

D O I：

10.1364/OL.31.001429

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The waveguiding properties and amplified spontaneous emission (ASE) of a blend of light-emitting gain-conjugated polymers were investigated. ASE-induced line narrowing occurs for excitation fluences larger than 100 mu J cm(-2), with a maximum optical-gain coefficient of 8 cm(-1). Energy transfer between the host and guest polymers, significantly reducing the self-absorption, leads to a loss coefficient of the waveguide as low as 0.3 cm(-1), which is believed to be the lowest value reported for active organic gain slabs and a highly polarized emission, with a polarization contrast up to 0.65. These results indicate that gain-conjugated polymer blends are state-of-the-art organic materials for lasing devices. (c) 2006 Optical Society of America

引用

页码：1429 / 1431

页数：3

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