Laser element
US12176683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2021 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | May 29, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/176
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser element comprises a substrate; and an n-type semiconductor layer, a light emitting layer, a p-type semiconductor layer, and an electrode layer successively laminated on one principal surface of the substrate, wherein the p-type semiconductor layer includes a ridge raised in a stripe shape, the ridge including a contact layer formed in a layer including a principal surface on a side opposite to the substrate, a stepped portion defined by recessing the contact layer is formed in at least part of a boundary between a lateral surface among surfaces defining outer edges of the ridge, the lateral surface extending along a lengthwise direction of the ridge, and the principal surface of the ridge, and the electrode layer covers the principal surface of the ridge and the stepped portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.