Fishing – trapping – and vermin destroying
Patent
1991-03-22
1992-05-26
Chaudhuri, Olik
Fishing, trapping, and vermin destroying
437129, H01L 2120
Patent
active
051167697
ABSTRACT:
A semiconductor laser device including a substrate containing a groove through which the laser light is emitted, a first layer disposed between the substrate and an active layer including a superlattice region opposite the groove and having the same conductivity type as the region in the sides walls of the groove and a disordered region in the first layer adjacent the superlattice of a different conductivity type from that of the superlattice region for confining current flow from the substrate to the active layer. A method of producing the semiconductor laser device includes implanting impurity ions which change the conductivity type but suppress the disordering of the superlattice region after annealing. The ions are implanted through the groove and produce the desired conductivity type region in the side walls of the groove.
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patent: 4957879 (1990-09-01), Omura et al.
patent: 5020068 (1991-05-01), Isshiki
"Microstructure Semiconductor . . . Integrated Circuit", Scientific Monthly Report, vol. 41, No. 11, pp. 910-913.
Chaudhuri Olik
Mitsubishi Denki & Kabushiki Kaisha
Pham Long
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