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- W1574108341 abstract "They exhibit strong absorption hands with peak absorption coefficients -10’ cm?, and large optical gain cross-sections cm’, giving the possibility of enormous gain. Emission bandwidths can exceed 100 nm, and may be tuned from 400 to 700 nm by appropriate chemical design. Unlike small dye molecules, polymers exhibit little concentration quenching, and show fluorescence quantum efficiencies as high as 60% in the undiluted solid state. Particularly important is their capacity for simple processing. Both solution processing, and hot embossing. can be used to form flexible shapes and structures that may control the light emission. To date, polymer lasers have used large-frame laser systems (e.g. Tisapphire and nitrogen lasers) for excitation [1,2]. We now report improved polymer lasers that are pumped by a small microchip laser. In doing so, we have formed compact and convenient all-solid-state laser systems with the potential for broad spectral tuning. Specifically, we report blue and red lasing at wavelengths around 460, 635 and 675 nm from surface-emitting, distributed feedback lasers using the conjugated polymer MEHPPV, and several polyfluorene derivatives. We present the output energy, efficiency and spectral characteristics of the devices, and a detailed analysis of the surface-emitted laser modes." @default.
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- W1574108341 date "2005-04-12" @default.
- W1574108341 modified "2023-09-27" @default.
- W1574108341 title "Power and beam characteristics of semiconducting polymer lasers pumped by a microchip laser" @default.
- W1574108341 doi "https://doi.org/10.1109/cleoe.2003.1313432" @default.
- W1574108341 hasPublicationYear "2005" @default.
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