Vertical cavity surface emitting laser device with integrated tunnel junction
US12027819B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2020 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Mar 30, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/3013
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
VCSELs have a substrate, first and second electrical contacts (ECs), and an optical resonator (OR), having first and second distributed Bragg reflectors (DBRs) and an active layer between the DBRs. The first DBR is between the substrate and the active layer. One of the DBRs has: first and second parts, having different conductivity types, and each with a pair of layers with different refractive indices. A tunnel junction (TJ) is between the parts. The ECs are for electrically pumping the OR such that the TJ is reversely biased during operation of the VCSEL. Either the first DBR includes the parts, having a relative thickness of the second part to a total thickness of the first and second parts between 0.1-0.8, or the second DBR has the parts, the second part being on the TJ facing away from the active layer, and the relative thickness being between 0.15-0.6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.