Abstract
Ga(1−x)AlxAs‐GaAs double‐heterostructure mesa‐stripe‐geometry lasers that operate continuously at room temperature (23 °C) have been grown by metalorganic chemical vapor deposition (MO‐CVD). Threshold currents as low as 119 mA dc have been measured for devices with a mesa width of 14 μm and a cavity length of 380 μm.