Ring laser gyroscopes with active volume Bragg grating
US10907967B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2019 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Oct 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/661
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A ring laser gyroscope comprises an optical block that defines an optical closed loop pathway; at least one mirror structure mounted on the optical block and in communication with the closed loop pathway; at least one volume Bragg grating mounted on the optical block and in communication with the closed loop pathway; and a pump laser in communication with the volume Bragg grating, the laser operative to emit a light beam at a selected incident angle such that the beam passes through the volume Bragg grating and overlaps with the closed loop pathway. The volume Bragg grating is operative as a gain medium to increase an optical power of the beam, and a pair of counter-propagating beams is produced within the closed loop pathway from the beam. The mirror structure and the volume Bragg grating are positioned and angled to reflect the counter-propagating beams around the closed loop pathway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.