| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor laser capable of stably oscillating a laser light of short wavelength. SOLUTION: This semiconductor laser possesses a first clad layer 12, an active layer 16 formed on the first clad layer and having a multiple quantum well layer composed of a GaN semiconductor, a current constriction layer 24, formed on the active layer and having an opening 26 of stripe geometry, and a second clad layer 22 formed on the current constriction layer and having a mesa stripe 23 that corresponds to the opening.
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