Engineering topics
Publications and source records attributed to Furman, T. R..
Improved fabrication of InGaAsP stripe lasers involves replacement of oxide stripe in quaternary laser by an n-type layer of InP grown on top of quaternary cap layer. Process allows use of stop etch that selectively removes InP and does not etch InGaAsP, making fabrication especially convenient.
Aging tests of incoherently operated zinc-doped double-heterojunction (DH) lasers designed for short-wavelength (0.71-0.72 micron) operation show that the introduction of buffer layers between the substrate and the DH structure leads to a drastic reduction in gradual degradation. This is attributed to a decrease in lattice mismatch stress.