Invention Grant
- Patent Title: Semiconductor laser element
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Application No.: US16554484Application Date: 2019-08-28
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Publication No.: US10903624B2Publication Date: 2021-01-26
- Inventor: Yoji Nagao
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan
- Agency: Foley & Lardner LLP
- Priority: JP2018-162260 20180831
- Main IPC: H01S5/026
- IPC: H01S5/026 ; H01S5/343

Abstract:
A semiconductor laser element includes a first nitride semiconductor layer of a first conductivity-type; a second nitride semiconductor layer of a second conductivity-type; and an active region disposed between the first nitride semiconductor layer and the second nitride semiconductor layer. The active region includes a first barrier layer, an intermediate layer, a well layer and a second barrier layer. A lattice constant of the intermediate layer is greater than a lattice constant of each of the first barrier layer and the second barrier layer, and smaller than a lattice constant of the well layer. A thickness of the intermediate layer is greater than a thickness of the well layer. The well layer and the second barrier layer are in contact with each other, or a distance between the well layer and the second barrier layer is smaller than a distance between the first barrier layer and the well layer.
Public/Granted literature
- US20200076165A1 SEMICONDUCTOR LASER ELEMENT Public/Granted day:2020-03-05
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