EP 2261758 B1 20111207 - Atomic clock operated with Helium-3
Title (en)
Atomic clock operated with Helium-3
Title (de)
Mit Helium-3 angetriebene Atomuhr
Title (fr)
Horloge atomique fonctionnant à l'hélium 3
Publication
Application
Priority
FR 0953901 A 20090611
Abstract (en)
[origin: EP2261758A1] The clock has a cell (1) filled with a measuring medium, and an exciter (2) i.e. laser diode, for exciting particles of the medium until a higher energy level. A photodetector (4) collects frequency of light energy reproduced by the medium, and transmits a signal to a counting device (5). An application device (9) applies static magnetic field parallel to a laser beam. A control unit (8) controls the application device to adjust the magnetic field. The medium includes helium-3 plasma. Another exciter (10) provokes the helium-3 plasma from gaseous helium-3.
IPC 8 full level
G04F 5/14 (2006.01)
CPC (source: EP US)
G04F 5/14 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
EP 2261758 A1 20101215; EP 2261758 B1 20111207; AT E536573 T1 20111215; FR 2946766 A1 20101217; FR 2946766 B1 20110701; JP 2010286490 A 20101224; US 2010315173 A1 20101216; US 8183942 B2 20120522
DOCDB simple family (application)
EP 10165184 A 20100608; AT 10165184 T 20100608; FR 0953901 A 20090611; JP 2010132868 A 20100610; US 79661510 A 20100608