Packaging of an optical fiber head in high-power laser applications
US10082630B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2017 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Nov 8, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0927
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A heat-reduced package of an optical fiber head comprising a delivery optical fiber (DOF), a cladding mode stripper, an optical end cap, a beam shaper, a window, and a housing operates for delivering the laser light from DOF to free space with a uniform temperature gradient inside the housing while maintaining beam quality. The cladding mode stripper comprising a section of cladding-exposed DOF inside bore of the glass ferrule fused together is effective to remove cladding modes from DOF. The optical end cap comprising a corrugated structure is configured to deflect the cladding modes, reduce optical feedback, and facilitate optical and thermal dispersion. The housing comprises another corrugated structure on an inner wall to absorb undesired optical energy. The housing may further comprise a cooling slot to disperse the heat accumulated in the housing to its surroundings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.