发明授权
- 专利标题： Distributed feedback semiconductor laser
- 专利标题（中）： 分布式反馈半导体激光器
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申请号： US699586申请日： 1985-02-08
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公开(公告)号： US4573158A公开(公告)日： 1986-02-25
- 发明人: Katsuyuki Utaka , Kazuo Sakai , Shigeyuki Akiba
- 申请人： Katsuyuki Utaka , Kazuo Sakai , Shigeyuki Akiba
- 申请人地址： JPX Tokyo
- 专利权人： Kokusai Denshin Denwa Kabushiki Kaisha
- 当前专利权人： Kokusai Denshin Denwa Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX56-133280 19810827
- 主分类号： H01S5/00
- IPC分类号： H01S5/00 ; H01S5/06 ; H01S5/0625 ; H01S5/12 ; H01S3/19
摘要：
A semiconductor laser of distributed feedback type, which is provided with a portion having periodic refractive index variations in the direction of light propagation in one of an active layer and a layer adjacent thereto and is caused to perform laser oscillation by injecting a current into the active layer portion. In accordance with the present invention, a current injection region having no periodic refractive index variations is formed on an extension of the portion having the periodic refractive index variations.
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