| 摘要 |
PROBLEM TO BE SOLVED: To increase light-output by making a cross sectional area of its optical waveguide larger in a semiconductor laser apparatus, while allowing to operate stably at lateral mode. SOLUTION: It provides a gain portion 10 provided with the optical waveguide including a semiconductor layer 3 with gain to lighting, and a mirror portion 20 for comprising a mirror of one of Fabry-Perot resonators, placed adjacent or cross to a light emitting end surface of the optical waveguide. This mirror portion 20 is to include higher reflectance than that of the light emitting end surface, in a smaller range than width of the optical waveguide opposed, and high reflectance area 22 which is higher reflectance than that of outside of the range. COPYRIGHT: (C)2003,JPO
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