| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor laser element, having a good laser ocsillation characteristic which is capable of being used as a light source of an optical disc system. SOLUTION: In a gallium nitride based semiconductor laser element having an activated layer 6, comprising a semiconductor nitride formed between at least clad layers 4 and 9, and/or guide layers 5 and 8, on a substrate 1, a length in a direction of a laser resonator of an ohmic electrode 11 which supplies current to the activated layer, is shorter than the length of the laser resonator. |
