Université de Neuchâtel

Microfabricated alkali vapor cell with anti-relaxation wall coating

Straessle, Rahel ; Pellaton, Matthieu ; Affolderbach, Christoph ; Pétremand, Yves ; Briand, Danick ; Mileti, Gaetano ; de Rooij, Nicolas F

In: Applied Physics Letters, 2014/105/4/043502/1-4

We present a microfabricated alkali vapor cell equipped with an anti-relaxation wall coating. The anti-relaxation coating used is octadecyltrichlorosilane and the cell was sealed by thin-film indium-bonding at a low temperature of 140 °C. The cell body is made of silicon and Pyrex and features a double-chamber design. Depolarizing properties due to liquid Rb droplets are avoided by confining the...

Université de Neuchâtel

Microfabricated rubidium vapour cell with a thick glass core for small-scale atomic clock applications

Pétremand, Yves ; Affolderbach, Christoph ; Straessle, Rahel ; Pellaton, Matthieu ; Briand, Danick ; Mileti, Gaetano ; de Rooij, Nicolaas F.

In: JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2012, vol. 22, no. 2, p. 025013 (8pp)

This paper presents a new fabrication method to manufacture alkali reference cells having dimensions larger than standard micromachined cells and smaller than glass-blown ones, for use in compact atomic devices such as vapour-cell atomic clocks or magnetometers. The technology is based on anodic bonding of silicon and relatively thick glass wafers and fills a gap in cell sizes and technologies...

Université de Neuchâtel

Low-temperature indium-bonded alkali vapor cell for chip-scale atomic clocks

Straessle, Rahel ; Pellaton, Matthieu Lucien ; Affolderbach, Christoph ; Pétremand, Yves ; Briand, Danick ; Mileti, Gaetano ; de Rooij, Nicolaas F

In: Journal of Applied Physics, 2013/113/6/064501/1-8

A low-temperature sealing technique for micro-fabricated alkali vapor cells for chip-scale atomic clock applications is developed and evaluated. A thin-film indium bonding technique was used for sealing the cells at temperatures of ≤140 °C. These sealing temperatures are much lower than those reported for other approaches, and make the technique highly interesting for future micro-fabricated...