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1. WO2015143048 - OPTICAL ATOMIC CLOCK

Publication Number WO/2015/143048
Publication Date 24.09.2015
International Application No. PCT/US2015/021274
International Filing Date 18.03.2015
Chapter 2 Demand Filed 18.01.2016
IPC
G04F 5/14 2006.1
GPHYSICS
04HOROLOGY
FTIME-INTERVAL MEASURING
5Apparatus for producing preselected time intervals for use as timing standards
14using atomic clocks
CPC
G02F 1/0356
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
03based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
035in an optical waveguide structure
0356controlled by a high-frequency electromagnetic wave component in an electric waveguide structure
G04F 5/14
GPHYSICS
04HOROLOGY
FTIME-INTERVAL MEASURING
5Apparatus for producing preselected time intervals for use as timing standards
14using atomic clocks
Applicants
  • OEWAVES, INC. [US]/[US]
Inventors
  • LIANG, Wei
  • MATSKO, Andrey
  • MALEKI, Lute
  • ELIYAHU, Danny
  • ILCHENKO, Vladimir
  • SAVCHENKOV, Anatoliy
Agents
  • BRILLHART, Kurt
Priority Data
61/955,70119.03.2014US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL ATOMIC CLOCK
(FR) HORLOGE ATOMIQUE OPTIQUE
Abstract
(EN) An optical atomic clock utilizing two different laser light sources is described. A source laser is locked to a first optical resonator, which supports a whispering gallery mode for the source laser and generates optical hyperparametric sidebands from the source laser output by multi-wave mixing. A reference laser is locked to an atomic reference via a second optical resonator, and the first optical resonator is locked to the reference laser. Optical parametric sidebands, which are locked to an atomic reference but are generated from a wavelength unrelated to the clock transition of the atomic reference, are coupled out of the first optical resonator to generate an RF signal useful in atomic timekeeping.
(FR) L'invention concerne une horloge atomique optique utilisant deux sources de lumière laser différentes. Un laser source est verrouillé sur un premier résonateur optique, qui supporte un mode de voûte acoustique pour le laser source et génère des bandes latérales hyperparamétriques optiques à partir du laser source délivré en sortie par mélange multi-ondes. Un laser de référence est verrouillé sur une référence atomique par l'intermédiaire d'un second résonateur optique, et le premier résonateur optique est verrouillé sur le laser de référence. Des bandes latérales paramétriques optiques, qui sont verrouillés à une référence atomique mais sont générées à partir d'une longueur d'onde sans rapport avec la transition d'horloge de la référence atomique, sont couplées hors du premier résonateur optique pour générer un signal RF utile dans le chronométrage atomique.
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