Laser cavity construction for reduced wavelengths
US11381056B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Mar 28, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/166
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source has a resonant laser cavity with an optical grating and a waveguide that has a longitudinal axis. A portion of the longitudinal axis extends through the optical grating and serves as a grating axis. The laser cavity is configured to generate a laser signal that exits the laser cavity through the optical grating. The optical grating includes multiple perturbation structures that each causes a perturbation in an effective refractive index of the waveguide. The perturbation structures are staggered on the waveguide such that the perturbation structures that are adjacent to one another in a longitudinal direction are spaced apart in a transverse direction. The longitudinal direction is a direction parallel to the grating axis and the transverse direction is a direction transverse to the longitudinal direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.