1 April 1998 Light amplification and laser emission in conjugated polymers
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We study optical gain and laser emission from semiconducting conjugated polymers after strong optical excitation with femtosecond laser pulses. Stimulated emission from few-hundred-nanometer thin films results in a sharp increase in emission intensity and emission line narrowing. Very large optical gain due to the stimulated emission is measured directly by pump-probe spectroscopy. Using the large light amplification in these conjugated polymers, we demonstrated planar and ring lasers of very small sizes that are suitable for applications in integrated optics. Vertical cavity surface emitting lasers, distributed feedback through surface relief grating, and whispering-gallery mode emission from ring resonators are demonstrated.
Alex Schuelzgen, Christine Spiegelberg, Michael M. Morrell, Sergio Brito Mendes, Pierre-Marc Allemand, Yutaka Kawabe, Makoto Kuwata-Gonokami, Seppo Honkanen, Mahmoud Fallahi, Bernard Kippelen, Nasser Peyghambarian, "Light amplification and laser emission in conjugated polymers," Optical Engineering 37(4), (1 April 1998). https://doi.org/10.1117/1.601949 . Submission:

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