FR3089646B1 - ATOMIC MICRO-CLOCK AND ASSOCIATED REGULATION PROCESS - Google Patents

ATOMIC MICRO-CLOCK AND ASSOCIATED REGULATION PROCESS Download PDF

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Publication number
FR3089646B1
FR3089646B1 FR1872563A FR1872563A FR3089646B1 FR 3089646 B1 FR3089646 B1 FR 3089646B1 FR 1872563 A FR1872563 A FR 1872563A FR 1872563 A FR1872563 A FR 1872563A FR 3089646 B1 FR3089646 B1 FR 3089646B1
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France
Prior art keywords
regulator
clock
laser diode
supply current
servo loop
Prior art date
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FR1872563A
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French (fr)
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FR3089646A1 (en
Inventor
Rémy Vicarini
Hafiz Moustafa Abdel
Eric Kroemer
Rodolphe Boudot
Serge Galliou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
De Besancon, University of
Tronics Microsystems SA
Original Assignee
De Besancon, University of
Tronics Microsystems SA
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Priority to FR1872563A priority Critical patent/FR3089646B1/en
Publication of FR3089646A1 publication Critical patent/FR3089646A1/en
Application granted granted Critical
Publication of FR3089646B1 publication Critical patent/FR3089646B1/en
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/14—Apparatus for producing preselected time intervals for use as timing standards using atomic clocks
    • G04F5/145—Apparatus for producing preselected time intervals for use as timing standards using atomic clocks using Coherent Population Trapping

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  • Life Sciences & Earth Sciences (AREA)
  • Ecology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Semiconductor Lasers (AREA)

Abstract

L’invention concerne une micro-horloge atomique (10a) comportant :- une diode laser (12) dont un courant d’alimentation (I(t)) est configuré pour émettre un champ optique bi-chromatique ; et - des moyens de régulation en température (21) de ladite diode laser (12) ;- une première boucle d’asservissement comportant un régulateur (19) d’un décalage (I 0 ) dudit courant d’alimentation (I(t));- une seconde boucle d’asservissement permettant de réguler une fréquence de modulation (ω) dudit courant d’alimentation (I(t)) de ladite diode laser (12) ;- une troisième boucle d’asservissement comportant un régulateur (26a) d’une consigne (T Cvar ) desdits moyens de régulation en température (21) commandé en fonction d’une amplitude d’un signal (S D ) en sortie d’une photodiode (16); ledit régulateur étant configuré pour réguler ladite consigne (T Cvar ) afin que ladite amplitude dudit signal (S D ) en sortie de ladite photodiode corresponde à une amplitude de référence (A ref ) mesurée dans les conditions réelles de fonctionnement. Figure pour l’abrégé : Fig 3The invention relates to an atomic micro-clock (10a) comprising: - a laser diode (12) of which a supply current (I (t)) is configured to emit a bichromatic optical field; and - temperature regulation means (21) of said laser diode (12); - a first servo loop comprising a regulator (19) of an offset (I 0) of said supply current (I (t) ); - a second servo loop making it possible to regulate a modulation frequency (ω) of said supply current (I (t)) of said laser diode (12); - a third servo loop comprising a regulator (26a ) a setpoint (T Cvar) of said temperature regulation means (21) controlled as a function of an amplitude of a signal (SD) at the output of a photodiode (16); said regulator being configured to regulate said setpoint (T Cvar) so that said amplitude of said signal (S D) at the output of said photodiode corresponds to a reference amplitude (A ref) measured under actual operating conditions. Figure for the abstract: Fig 3

FR1872563A 2018-12-07 2018-12-07 ATOMIC MICRO-CLOCK AND ASSOCIATED REGULATION PROCESS Active FR3089646B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1872563A FR3089646B1 (en) 2018-12-07 2018-12-07 ATOMIC MICRO-CLOCK AND ASSOCIATED REGULATION PROCESS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1872563A FR3089646B1 (en) 2018-12-07 2018-12-07 ATOMIC MICRO-CLOCK AND ASSOCIATED REGULATION PROCESS

Publications (2)

Publication Number Publication Date
FR3089646A1 FR3089646A1 (en) 2020-06-12
FR3089646B1 true FR3089646B1 (en) 2020-12-11

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FR1872563A Active FR3089646B1 (en) 2018-12-07 2018-12-07 ATOMIC MICRO-CLOCK AND ASSOCIATED REGULATION PROCESS

Country Status (1)

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FR (1) FR3089646B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004038871A2 (en) 2002-08-22 2004-05-06 Xponent Photonics Inc. Grating-stabilized semiconductor laser
US6927636B2 (en) * 2003-09-03 2005-08-09 Symmetricom, Inc. Light stabilization for an optically excitable atomic medium
JP5954540B2 (en) * 2012-09-10 2016-07-20 セイコーエプソン株式会社 Atomic cell module, quantum interference device, electronic device, and magnetic field control method for atomic cell
JP2015070415A (en) * 2013-09-27 2015-04-13 セイコーエプソン株式会社 Atom oscillator, electronic apparatus, moving body, and method of manufacturing atom oscillator

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Publication number Publication date
FR3089646A1 (en) 2020-06-12

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