• Small-signal analysis of 1.3/spl mu/m microcavity light-emitting diodes

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    1999

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    Landais, P.; Roycroft, B.; Shaw, A.; Depreter, B.; Moerman, I.; Hegarty, J.;, Small-signal analysis of 1.3/spl mu/m microcavity light-emitting diodes, IEEE Photonics Technology Letters, 11, 11, 1999, 1342, 1344

    Abstract

    THE MODULATION SPEED OF 1.3-MU M MICROCAVITY LIGHT-EMITTING DIODES (MCLED'S) HAS BEEN MEASURED USING A SMALL-SIGNAL MODULATION ANALYSIS, A SPEED OF 260 MHZ USING A 25-MU M DIAMETER SAMPLE AT CURRENT DENSITY OF 10 KA/CM(2) HAS BEEN ACHIEVED, THE CARRIER CONFINEMENT HAS BEEN CALCULATED FOR SEVERAL CARRIER DENSITIES IN ORDER TO INVESTIGATE THE ORIGIN OF THE SPEED LIMITATION. BY COMPARING THE PERFORMANCE OF THE 1.3-MU M MCLED'S WITH THAT OF THE 990-NM DEVICES WE CONCLUDE THAT THE LIMITING FACTOR ON THE SPEED SEEMS TO BE A LACK OF CARRIER CONFINEMENT IN THE QUANTUM WELLS AND NOT A CAVITY EFFECT.

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    http://hdl.handle.net/2262/435

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    Keywords

    carrier density, current density, infrared sources, light emitting diodes, micro-optics, micromechanical resonators, optical resonators
    Author's Homepage: http://people.tcd.ie/jhegarty

    Author: HEGARTY, JOHN

    Type of material: Journal Article