Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
1979-02-09
1981-02-17
Ozaki, G.
Metal treatment
Process of modifying or maintaining internal physical...
Chemical-heat removing or burning of metal
148 335, 148172, 331 945H, 357 16, H01L 21208
Patent
active
042512980
ABSTRACT:
A laser p-n junction is formed in a structure consisting of a pair of layers of opposite conductivity type grown by liquid phase epitaxy and having sandwiched therebetween a quantity of active material of higher refractive index and lower band gap. The layers are grown on a substrate having a groove in its surface under conditions such that the active material is thicker in the region overlying the center of the groove than elsewhere and where a dopant is diffused through one of the layers to translate the portions of the p-n junction not overlying the groove into the material of the other layer while leaving the portion of the p-n junction overlying the center of the groove bounded on at least one side by the lower band-gap active material.
REFERENCES:
patent: 4033796 (1977-07-01), Burnham et al.
International Standard Electric Corporation
O'Halloran John T.
Ozaki G.
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