Laser apparatus having a composite laser cavity
US10236662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2015 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Nov 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/3235
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The teachings herein disclose a laser assembly (20) that implements a “composite cavity” formed in part in a III/V die (22), in part in a silicon die (26), and in part in a glass member (24) having a waveguide (44) coupling the cavity portion in the III/V die with the cavity portion in the silicon die. This arrangement capitalizes on the lasing efficiency of the III/V die, which is used as the gain medium while advantageously using the glass member to extend the lasing cavity into the silicon die. Laser-scribing the cavity waveguide in place after mounting the III/V die, the silicon die or dies, and the glass member, greatly relaxes the mounting alignment precision needed for the constituent parts of the overall assembly. Moreover, in one or more embodiments, glass member includes one or more laser-scribed waveguides operative as optical interconnects going between two or more silicon dies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.