A 1.3-µm-range GaInNAs/GaAs single-quantum-well laser was tested for 1000 hours at 24°C under an auto-current-control condition. No degradation was observed. The threshold current fell slightly (14%). The lasing wavelength was stable. The lack of rapid degradation under an auto-power-control condition at a high temperature (50°C) suggests that a reliable GaInNAs laser diode with a practical lifetime may soon be realized.
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Kondow et al. (1999) studied this question.
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