Passively pumped, polycrystalline ceramic high and ultra-high vacuum chambers

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United States of America Patent

PATENT NO 11766651
SERIAL NO

16840637

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Abstract

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A sealed, passively pumped, polycrystalline ceramic vacuum chamber and method for fabricating the chamber are disclosed. The body of the vacuum chamber is made from a polycrystalline ceramic, for example, alumina. The vacuum chamber includes one or more windows made from a transparent ceramic, for example, sapphire, to accommodate optical access, while remaining amorphous-glass free to minimize or eliminate helium permeation. The vacuum chamber components are joined via laser welding or furnace brazing and the completed chamber is bakeable at temperatures up to 400° C. The vacuum chamber can operate at high or ultra-high vacuum pressures for an extended period through the use of one or more getter-based pumps. The vacuum chamber may include one or more atomic sources depending upon the application.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA LLCP O BOX 5800 MS-0161 LEGAL TECHNOLOGY TRANSFER CENTER ALBUQUERQUE NM 87185

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Biedermann, Grant Albuquerque, US 9 224
De, Smet Dennis J Bosque Farms, US 2 1
Lee, Jongmin Albuquerque, US 210 822
Schwindt, Peter D D Albuquerque, US 2 0
Walker, Charles A Albuquerque, US 10 16

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