| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor laser applicable to a rewritable optical disk necessitating a laser light source with a high light output, and increased in a kink light output, and decreased in operating currents by keeping heating due to injecting currents low at the time of laser oscillation, and a method for manufacturing this semiconductor laser. SOLUTION: A mesa 112 is formed under the condition of a proper etching gas pressure and a proper substrate temperature by dry etching so that a double heterostructure constituted of at least an active layer 104 and clad layers 103 and 107 interposing this active layer 104 cam be formed on a substrate 102 constituted of a zincblende type compound semiconductor whose substrate facial azimuth is inclined from 001. Also, mesa-shaped stripes for operating light closure to a horizontal direction are formed, and the cross section shapes vertical to the stripe directions of the mesa are made symmetrical when viewed with the substrate below so that a semiconductor laser without any sagging at the mesa fringe can be manufactured.
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