Abstract
Subpicosecond wavelength non-degenerate differential transmission (DT) was used to observe the carrier relaxation mechanism in GaN based quantum well (QW) with and without metal nanoparticles (MNPs) in it. The spontaneous emission dominates the stimulated emission for above the GaN band edge excitation energy. We observed long decay times for Au-embedded sample and short decay times for Ag-embedded sample with respect to reference sample.
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