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 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.
Original language | English |
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Pages (from-to) | 869-871 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 29 |
Publication status | Published - 15 Apr 2004 |
Keywords
- LIGHT-EMITTING-DIODES
- CONJUGATED POLYMERS
- LASER-EMISSION
- WAVE-GUIDES
- GAIN
- GENERATION
- TRANSPORT