Laser operation in non-doped thin films made of a small-molecule organic red-emitter

Stimulated emission in small-molecule organic films at a high dye concentration is generally hindered by fluorescence quenching, especially in the red region of the spectrum. Here we demonstrate the achievement of high net gains (up to 50 cm-1) around 640 nm in thermally evaporated non-doped films o...

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Bibliographic Details
Published in:Applied physics letters 2009, Vol.95
Main Authors: Rabbani-Haghighi, Hadi, Forget, Sebastien, Chenais, Sebastien, Siove, Alain, Castex, Marie-Claude, Ishow, Eléna
Format: Article
Language:English
Subjects:
Optics
Physics
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Summary:Stimulated emission in small-molecule organic films at a high dye concentration is generally hindered by fluorescence quenching, especially in the red region of the spectrum. Here we demonstrate the achievement of high net gains (up to 50 cm-1) around 640 nm in thermally evaporated non-doped films of 4-di(4'-tert-butylbiphenyl-4-yl)amino-4'-dicyanovinylbenzene, which makes this material suitable for green-light pumped single-mode organic lasers with low threshold and superior stability. Lasing effect is demonstrated in a DBR resonator configuration, as well as under the form of random lasing at high pump intensities.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3182820