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We propose and demonstrate a technique for tailoring the emission bandwidth of ∼1.3 μm quantum dot superluminescent light-emitting diodes. A broadening of the emission is achieved by incorporating the InAs quantum dot layers in InGaAs quantum wells of different indium compositions. These structures exhibit a broader and flatter emission compared to a simple dot-in well structure comprised of wells of identical indium composition.
Date of Publication: Jan. 1, 2006