Abstract
InGaAs/GaAs/AlGaAs quantum well (QW) structures have been grown at different temperatures by metalorganic chemical vapor deposition (MOCVD) with tertiarybutylarsine (TBAs) as the group V source, and it is found that the QW structures grown at 640 °C shows the strongest photoluminescence (PL) emission. Based on the optimized growth conditions, the InGaAs/GaAs/AlGaAs graded index (GRIN) separate confinement heterostructure (SCH) double quantum well lasers have been grown with TBAs. The 4-μm-wide ridge waveguide lasers show room temperature continuous-wave lasing around 980 nm, with a typical threshold current of 14 mA, indicating that TBAs could be a promising alternative to the highly hazardous gas source AsH 3 in growing InGaAs/GaAs/AlGaAs 980 nm QW lasers.
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