Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2753542
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Amplification of three short light pulses in a 140 ps time window at 5 kHz repetition rate has been demonstrated using a compact amplifier based on the conjugated polymer poly(9,9 '-dioctylfluorene-co-benzothiadiazole). The amplifier was optically pumped and gratings were used to couple the signal into and out of the film. A gain of 22 dB was observed for a signal pulse temporally aligned with the pump pulse in a 1 mm waveguide. For a signal pulse delayed by 140 ps, the maximum gain achieved was 14 dB. The results are a step towards the use of polymer amplifiers in data communications. (c) 2007 American Institute of Physics.
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