Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kunio Takeuchi0
Masayuki Hata0
Seiichi Tokunaga0
Date of Patent
October 26, 2010
0Patent Application Number
120587290
Date Filed
March 30, 2008
0Patent Primary Examiner
Patent abstract
A semiconductor laser device capable of improving planarity of cleavage planes of an optical waveguide thereof is obtained. This semiconductor laser device includes a support substrate, a semiconductor laser element portion having a pair of cavity facets provided with ends of an optical waveguide extending in a first direction and a bonding layer bonding the support substrate and the semiconductor laser element portion to each other, while the bonding layer has void portions formed on regions close to at least the ends of the optical waveguide in the vicinity of the cavity facets.
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