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research article

Microfabricated alkali vapor cell with anti-relaxation wall coating

Straessle, R.
•
Pellaton, M.
•
Affolderbach, C.
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2014
Applied Physics Letters

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 degrees 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 Rb droplets to one chamber only. Optical and microwave spectroscopy performed on this wall-coated cell are used to evaluate the cell's relaxation properties and a potential gas contamination. Double-resonance signals obtained from the cell show an intrinsic linewidth that is significantly lower than the linewidth that would be expected in case the cell had no wall coating but only contained a buffer-gas contamination on the level measured by optical spectroscopy. Combined with further experimental evidence this proves the presence of a working anti-relaxation wall coating in the cell. Such cells are of interest for applications in miniature atomic clocks, magnetometers, and other quantum sensors. (C) 2014 AIP Publishing LLC.

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Type
research article
DOI
10.1063/1.4891248
Web of Science ID

WOS:000341152600083

Author(s)
Straessle, R.
•
Pellaton, M.
•
Affolderbach, C.
•
Pétremand, Y.  
•
Briand, D.  
•
Mileti, G.
•
de Rooij, N. F.  
Date Issued

2014

Publisher

AIP American Institute of Physics

Published in
Applied Physics Letters
Volume

105

Issue

4

Article Number

043502

Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
SAMLAB  
Available on Infoscience
September 15, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/106882
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