Journal
OPTICS LETTERS
Volume 29, Issue 8, Pages 869-871Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.29.000869
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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 36 dBcm(-1) at 420 nm and 26 dB cm(-1) at 390 nm in solution and 350 dB cm(-1) in the solid state are obtained. These results show that semiconducting dendrimers have potential as visible laser and amplifier materials. (C) 2004 Optical Society of America.
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