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
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
收藏
页码:1429 / 1431
页数:3
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