Laser light source
US11881677B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 11, 2021 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Feb 10, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/021
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser light source includes: a resonance unit with a light emitter; and an optical negative feedback unit. The resonance unit includes: a first waveguide; a first reflector to input the reflected light to the first waveguide; a second waveguide; a second reflector connected to the second waveguide; and a ring resonator between the first waveguide and the second waveguide. The light from the first reflector is blocked from the ring resonator and partially transmitted to a first end of the first waveguide opposite to a second end connected to the light emitter and the first reflector. The optical negative feedback unit includes: a third waveguide to which the light transmitted to the first end of the first waveguide is inputted; and a third reflector connected to the third waveguide. The light from the third reflector is inputted to the first waveguide via the third waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.