We have investigated the room temperature optical properties of 50 μm length, 11 μm large and 500 nm thick tensile-strained germanium photonic wires. Tensile strain is transferred in the germanium layer using a Si3N4 film stressor. An optical recombination of tensile-strained germanium involving light hole band is observed around 1690 nm at room temperature corresponding to a strain magnitude around 0.4%. We show that the waveguided emission associated with a single tensile-strained germanium wire increases superlinearly as a function of the illuminated length. A decrease of the spectral broadening is observed as the pump intensity is increased. A 80 cm-1 modal optical gain is derived from the variable strip length method.


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    Title :

    Stimulated emission in single tensile-strained Ge photonic wire


    Contributors:
    El Kurdi, M. (author) / de Kersauson, M. (author) / David, S. (author) / Checoury, X. (author) / Beaudoin, G. (author) / Jakomin, R. (author) / Sagnes, I. (author) / Sauvage, S. (author) / Fishman, G. (author) / Boucaud, P. (author)


    Publication date :

    2011-09-01


    Size :

    243694 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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