Invention Grant
- Patent Title: Semiconductor laser element and semiconductor laser device
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Application No.: US15633801Application Date: 2017-06-27
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Publication No.: US10050412B2Publication Date: 2018-08-14
- Inventor: Yutaka Inoue , Satoshi Kawanaka , Hiroaki Uehara
- Applicant: USHIO DENKI KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: USHIO DENKI KABUSHIKI KAISHA
- Current Assignee: USHIO DENKI KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Studebaker & Brackett PC
- Priority: JP2016-127401 20160628
- Main IPC: H01S5/028
- IPC: H01S5/028 ; H01S5/323 ; H01S5/12 ; H01L21/02 ; H01S5/026 ; H01S5/042

Abstract:
Disclosed herein is a semiconductor laser element capable of suppressing a wavelength dependency of a reflection ratio. A reflective film of the semiconductor laser element includes an L1 layer arranged at a first position from the end faces of the resonator and having a refractive index of n1; and a periodic structure configured by layering a plurality of pairs of an L2N layer and an L2N+1 layer. The L2N layer has a refractive index of n2, and the L2N+1 layer has a refractive index of n3, where n2
Public/Granted literature
- US20170373464A1 SEMICONDUCTOR LASER ELEMENT AND SEMICONDUCTOR LASER DEVICE Public/Granted day:2017-12-28
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