Mode-hop-free hybrid external-cavity laser with passive thermo-optic coefficient compensation
US9871346B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Feb 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1085
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosed embodiments relate to a system that implements a hybrid laser. This system includes a reflective gain medium (RGM) comprising an optical gain material coupled to a mirror. This RGM is coupled to a spot-size converter (SSC), which optically couples the RGM to an optical reflector through a silicon waveguide. The SSC converts an optical mode-field size of the RGM to an optical mode-field size of the silicon waveguide. During operation, the RGM, the spot-size converter, the silicon waveguide and the silicon mirror collectively form a lasing cavity, wherein an effective thermo-optic coefficient (TOC) of a portion of the lasing cavity that passes through the optical gain material and the SSC material is substantially the same as the TOC of silicon. Finally, a laser output is optically coupled out of the lasing cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.