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PL spectra of SQW with various growth sequences: (a) On GaAs, (b) on cladding layer, and (c) on cladding layer grown in two steps.
SIMS profiles of SQW directly grown on GaAs buffer and cladding layer.
SIMS profiles of InGaAsN SQW grown directly on cladding layer with and without nitride passivation.
PL spectra of InGaAsN SQW grown on: (a) GaAs directly and (b) cladding layer layer with nitride passivation.
curves of long InGaAsN QWs lasers grown with nitride passivation and two-step growth, respectively. The inset shows their lasing spectra.
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