Invention Grant
- Patent Title: Surface light emitting semiconductor laser element
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Application No.: US16012400Application Date: 2018-06-19
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Publication No.: US10578819B2Publication Date: 2020-03-03
- Inventor: Yoshiaki Watanabe , Hironobu Narui , Yuichi Kuromizu , Yoshinori Yamauchi , Yoshiyuki Tanaka
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Michael Best & Friedrich LLP
- Priority: JP2003-140181 20030519
- Main IPC: H01S5/183
- IPC: H01S5/183 ; G02B6/42 ; H01S5/022 ; H01S5/042 ; H01S5/22 ; H01S5/323

Abstract:
A surface light emitting semiconductor laser element, comprises a substrate, a lower reflector including a semiconductor multi-layer disposed on the substrate, an active layer disposed on the lower reflector, an upper reflector including a semiconductor multi-layer disposed on the active layer, a compound semiconductor layer having a first opening for exposing the upper reflector and extending over the upper reflector, and a metal film having a second opening for exposing the upper reflector disposed inside of the first opening and extending over the compound semiconductor layer, wherein the metal film and the compound semiconductor layer constitute a complex refractive index distribution structure where a complex refractive index is changed from the center of the second opening towards the outside. A method of emitting laser light in a single-peak transverse mode is also provided.
Public/Granted literature
- US20180341076A1 SURFACE LIGHT EMITTING SEMICONDUCTOR LASER ELEMENT Public/Granted day:2018-11-29
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