Fiber laser oscillator and fiber laser processing apparatus
US7359411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2007 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/262
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An end cap is formed as a substantially cylindrical body having substantially the same diameter as an external diameter of a retaining unit of an oscillation fiber; a base end surface is integrally fusion-welded or fusion-bonded to one end surface of the oscillation fiber; and a leading end surface is obliquely cut relative to the light axis. A returning oscillating beam reflected by an optical resonator mirror is converged and made incident on a core end surface of the oscillation fiber 22 located at a focus position of an optical lens. However, since the core end surface is integrally bonded with the end cap and is not exposed to the atmosphere, the core end surface is not burned or deteriorated by the light energy of the oscillating beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.