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The authors report that the first reliable BH-SC-MQW semiconductor lasers in the GaInAsP quaternary system grown entirely by MOVPE. Threshold currents were as low as 10 mA with differential efficiencies of 0.18 mW/mA per facet at 20 degrees C for 250 mu m-long devices. A characteristic temperature of 49 K was measured for a 300 mu m-long laser. Initial reliability data suggest these lasers should have lifetimes comparable to standard BH lasers.
Date of Publication: 12 Oct. 1989