InP/InGaAsP buried mesa ridge laser: A new ridge laser with reduced leakage currents

We describe a new kind of InP/InGaAsP buried ridge laser—the buried mesa ridge laser. A simple calculation shows that this laser structure has considerably reduced leakage currents compared with the conventional buried ridge laser. The fabrication steps are described. The light-current characteristic curve measured on the InP/InGaAsP buried mesa ridge laser shows a linear behavior up to 40 mW, the highest value reported so far for the buried ridge type laser.