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Spherical Rubidium Vapor Cells Fabricated By Micro Glass Blowing

Published

Author(s)

E. J. Eklund, A Shkel, Svenja A. Knappe, Elizabeth A. Donley, John E. Kitching

Abstract

This paper presents an application of micro glass blowing, in which multiple glass spheres are simultaneously shaped on top of a silicon wafer and subsequently filled with rubidium. The fabrication process is based on etching cavities in silicon, followed by anodic bonding of a thin glass wafer to the etched silicon wafer. The bonded wafers are then heated inside a furnace at a temperature above the softening point of the glass, and due to expansion of the heated trapped gas in the cavities, the glass is blown into three-dimensional spherical cells. Microscopic alkali vapor cells are achieved by evaporation of 87Rb through a small glass nozzle into the cell cavities. The cells are then sealed by anodic bonding. The results of the cell fabrication and characterization are presented.
Conference Location
Kobe, JA
Conference Title
20th IEEE International Conference on Micro Electro Mechanical Systems

Keywords

clock, glass blowing, magnetometer, MEMS, vapor cell

Citation

Eklund, E. , Shkel, A. , Knappe, S. , Donley, E. and Kitching, J. (2007), Spherical Rubidium Vapor Cells Fabricated By Micro Glass Blowing, 20th IEEE International Conference on Micro Electro Mechanical Systems, Kobe, JA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50478 (Accessed February 27, 2024)
Created January 21, 2007, Updated February 17, 2017