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.
Patent, Filed 9 Sep 82, patented 22 May 84,
DEPARTMENT OF THE NAVY WASHINGTON DC
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This patent discloses an apparatus and method by which a high-power laser beam and a high-energy particle 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 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 Brewsters angle forming an elliptical hole. A thin film, approximately 6000 A, 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.
- Nuclear Physics and Elementary Particle Physics
- Lasers and Masers