Abstract
We present here the first simple double-heterostructure channeled-substrate laser with lateral index guiding grown by molecular beam epitaxy. The channel is along [110] direction. The threshold current is 60 mA. Linear light-current relation and stable far-field patterns have been observed over the range of currents tested (from 60 to 160 mA). The lasers operate in single longitudinal mode over a wide range of current. The intensity ratio of the dominant mode and the neighboring mode is greater than 100:1.
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