Spatial filter for high power laser beam
US6178045A · kind A · utility
13Cited by
21References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | May 19, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention comprises a spatial filter and a method of spatially filtering a laser beam, particularly a high power laser beam. The inventive spatial filter and method of use is especially suited for use in an optical system for writing index gratings in optical waveguides. The invention provides a method of writing gratings in optical waveguide fiber that results in improved grating performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.