Lasing in substituted polythiophene between dielectric mirrors

被引：5

作者：

Granlund, T ^{[1
]}

Theander, M

Berggren, M

Andersson, M

Ruzeckas, A

Sundström, V

Björk, G

Granström, M

Inganäs, O

机构：

[1] Linkoping Univ, Dept Phys, IFM, S-58183 Linkoping, Sweden

[2] Chalmers Univ Technol, Dept Polymer Technol, S-41296 Gothenburg, Sweden

[3] Univ Lund, Ctr Chem, S-22100 Lund, Sweden

[4] KTH, Lab Photon & Micron Engn, S-16440 Kista, Sweden

来源：

SYNTHETIC METALS | 1999年 / 102卷 / 1-3期

关键词：

laser; microcavity; photopumped; polymer; polythiophene;

D O I：

10.1016/S0379-6779(98)00227-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report photopumped lasing in a microcavity device with a polythiophene layer as emitter. The microcavity is made of a polymer film between two dielectric Bragg reflecting mirrors (DBR). The:microcavity devices is built by joining two polymer coated DBR mirrors at elevated temperature. When photopumping the film,a lasing threshold is observed at 120 nJ/cm(2). Comparative studies with fast pump-probe spectroscopy of thin polythiophene films, and the same polymer in photopumped lasing studies, indicate that the gain coefficient is 80 +/- 20 cm(2) and that the exciton concentration is 2X10(17) cm(2) at the lasing transition, well below the exciton-exciton recombination level.

引用

页码：1038 / 1041

页数：4

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