Abstract
Room-temperature pulsed operation of In0.49Ga0.31Al0.20P/In0.49Ga0.48Al0.03P/In0.49Ga0.31Al0.20P double heterostructure (DH) laser diodes has been achieved for the first time. The DH layers were grown by molecular beam epitaxy. The lasing wavelength was 0.66 ?m and the threshold current density was 3.2-3.6 × 104 A/cm2 at room temperature.
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