Abstract
We report a study of a new class of organic semiconductor as an optical gain medium. We demonstrate amplification of violet light by use of stimulated emission in a solution of a first-generation bis-fluorene-cored semiconducting dendrimer. Amplification is also observed in the solid state by means of amplified spontaneous emission in an optically pumped dendrimer planar waveguide. Gains of at 420 nm and at 390 nm in solution and in the solid state are obtained. These results show that semiconducting dendrimers have potential as visible laser and amplifier materials.
© 2004 Optical Society of America
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