Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3182820
Keywords
laser cavity resonators; laser stability; optical films; optical pumping; organic compounds; random processes; solid lasers; stimulated emission
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Funding
- ANR
- Universite Paris 13
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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 nondoped 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 distributed Bragg resonator configuration, as well as under the form of random lasing at high pump intensities.
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