Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Akinori Yoneda0
Date of Patent
July 31, 2007
0Patent Application Number
109629960
Date Filed
October 13, 2004
0Patent Primary Examiner
Patent abstract
A semiconductor laser device including: semiconductor layers including an n-type semiconductor layer, an active layer and a p-type semiconductor layer, the semiconductor layers having a stripe-shaped waveguide region formed therein; end face protective film formed on the end face of the semiconductor layer that is substantially perpendicular to the waveguide region; wherein a p-side protruding portion is formed in the vicinity of the end portion of a p-electrode or n-electrode.
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