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Sergio Brovelli, Tersilla Virgili, Marta M. Mroz, Giuseppe Sforazzini, Alberto Paleari, Harry L. Anderson, Guglielmo Lanzani and Franco Cacialli Ultra-Broad Optical Amplification and Two-Colour Amplified Spontaneous Emission in Binary Blends of Insulated Molecular Wires Advanced Materials 22

Article first published online: 20 AUG 2010 | DOI: 10.1002/adma.201000895

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We demonstrate optical amplification over a band >850 meV, via simultaneous exploitation of stimulated emission from mixed polymer systems in which energy transfer from the higher to lower-gap material is inhibited thanks to a complex interplay between morphology and interchain decoupling, driven by chain encapsulation. Amplified spontaneous emission (ASE) is obtained both with ad-hoc pumping into the relevant bands or with a single excitation (400nm) able to sustain ASE at both wavelengths simultaneously (two-colour ASE).

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