(19)
(11) EP 2 738 627 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.02.2015 Bulletin 2015/08

(43) Date of publication A2:
04.06.2014 Bulletin 2014/23

(21) Application number: 13191631.4

(22) Date of filing: 05.11.2013
(51) International Patent Classification (IPC): 
G04F 5/14(2006.01)
 H03L 7/26(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 05.11.2012 US 201261722468 P

(71) Applicant: CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement
2002 Neuchâtel (CH)

(72) Inventors:
  • Overstolz, Thomas
    2072 Saint-Blaise (CH)
  • Haesler, Jacques
    1789 Lugnorre (CH)

(74) Representative: GLN SA 
Avenue Edouard-Dubois 20
2000 Neuchâtel
2000 Neuchâtel (CH)

   


(54) Micro-machined vapor cell


(57) The invention concerns a micro-machined vapor cell (1) comprising a central silicon element (10) forming a cavity (20) containing vapor cell reactants such as alkali metal or alkali metal azide, at least a buffer gas, and/or at least an anti relaxation coating; a first (30) and a second (40) glass caps sealing the cavity (20); and a solenoid (50) arranged to provide a homogeneous magnetic field to said vapor cell (1). The solenoid (50) is coiled directly on the central silicon element (10) of the vapor cell (1). This invention is an improvement for the highly miniaturized atomic clocks developments.







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