Gain measurement and low-threshold laser operation in non-doped thin films made of a small-molecule organic red-emitter - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2009

Gain measurement and low-threshold laser operation in non-doped thin films made of a small-molecule organic red-emitter

Résumé

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.
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Dates et versions

hal-00399676 , version 1 (28-06-2009)
hal-00399676 , version 2 (15-07-2009)

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Hadi Rabbani-Haghighi, Sebastien Forget, Sebastien Chenais, Alain Siove, Marie-Claude Castex, et al.. Gain measurement and low-threshold laser operation in non-doped thin films made of a small-molecule organic red-emitter. 2009. ⟨hal-00399676v1⟩

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