Semiconductor laser

Details Semiconductor laser Semiconductor laser

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

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