Vacuum tight window through which a high power laser beam and a high energy particle beam can be transmitted within close proximity to each other
US4449789A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1982 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Sep 9, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus and method by which a high-power laser beam and a high-energy article beam may enter or exit a region, typically filled with gas, to or from another region, typically under vacuum. The two beams are spaced about 3-4 mm apart center-to-center at the entry/exit point and no gas is permitted to leak into the vacuum region. A disc of material capable of resisting high radiation fluxes without forming color centers is sealed into a metallic holding block. Prior to sealing of the disc, a hole approximately 0.16 cm is drilled into the disc while the disc is tilted at or above Brewster's angle forming an elliptical hole. A thin film, approximately 6000 .ANG., indium metallization is sputtered in a circular pattern about the hole and around the edges of a beryllium disc. An indium disc is then sandwiched between the disc with the hole and the beryllium disc touching the indium metallization on each piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.