H - Electricity – 01 – S
Patent
H - Electricity
01
S
345/32
H01S 5/223 (2006.01) H01S 5/024 (2006.01)
Patent
CA 1171507
Abstract of the Disclosure In a semiconductor laser of terraced substrate type, comprising on a terraced substrate (11) of n-GaAs substrate, a first clad layer (12) of n-GaAlAs, an active layer (13) of non-doped GaAlAs, a second clad layer (14) of p-GaAlAs and a current limiting layer (15) of n-GaAs, and further thereon a thick overriding layer (19) of n-GaAlAs with strip shaped opening (191), are epitaxially formed, and a current injection layer (16) is formed by Zn diffusion through the opening (191) in a manner one corner (161) of the injection front penetrate the current limiting layer (15) and reaches the second clad layer (14). By means of thick overriding layer (19), shortcircuiting between the active layer (13) and a p-side electrode (7) is prevented.
398924
Fujimoto Kazuo
Itoh Kunio
Mizuno Hiroyuki
Shimizu Hirokazu
Sugino Takashi
Borden Ladner Gervais Llp
Matsushita Electric Industrial Co. Ltd.
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