IN2015KN00352A - - Google Patents

Info

Publication number
IN2015KN00352A
IN2015KN00352A IN352KON2015A IN2015KN00352A IN 2015KN00352 A IN2015KN00352 A IN 2015KN00352A IN 352KON2015 A IN352KON2015 A IN 352KON2015A IN 2015KN00352 A IN2015KN00352 A IN 2015KN00352A
Authority
IN
India
Prior art keywords
alkali metal
laser beams
metal cell
pair
atoms
Prior art date
Application number
Inventor
Shigeyoshi Goka
Yuichiro Yano
Original Assignee
Ricoh Co Ltd
Univ Tokyo Metropolitan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd, Univ Tokyo Metropolitan filed Critical Ricoh Co Ltd
Publication of IN2015KN00352A publication Critical patent/IN2015KN00352A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • H01S5/0085—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for modulating the output, i.e. the laser beam is modulated outside the laser cavity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • H01S5/0687—Stabilising the frequency of the laser
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B17/00—Generation of oscillations using radiation source and detector, e.g. with interposed variable obturator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ecology (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Lasers (AREA)

Abstract

An atomic oscillator includes an alkali metal cell in which alkali metal atoms are enclosed, a light source which irradiates the atoms in the alkali metal cell with laser beams, a photodetector which detects a light amount of the laser beams passing through the alkali metal cell to enter the photodetector, and a controller which generates sidebands including a pair of laser beams with different wavelengths by performing frequency modulation of a carrier on the light source, causes the pair of laser beams with the different wavelengths to enter the alkali metal cell, and controls a modulation frequency according to optical absorption characteristics of the atoms by quantum interference effects of a pair of resonance laser beams, wherein the side bands include second order or higher order sidebands.
IN352KON2015 2012-08-30 2013-08-28 IN2015KN00352A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012190180A JP6124536B2 (en) 2012-08-30 2012-08-30 Atomic oscillator and CPT resonance excitation method
PCT/JP2013/073728 WO2014034955A1 (en) 2012-08-30 2013-08-28 Atomic oscillator and interrogation method of coherent population trapping resonance

Publications (1)

Publication Number Publication Date
IN2015KN00352A true IN2015KN00352A (en) 2015-07-10

Family

ID=50183752

Family Applications (1)

Application Number Title Priority Date Filing Date
IN352KON2015 IN2015KN00352A (en) 2012-08-30 2013-08-28

Country Status (8)

Country Link
US (1) US9444476B2 (en)
EP (1) EP2891247A4 (en)
JP (1) JP6124536B2 (en)
CN (1) CN104685788B (en)
BR (1) BR112015004639A2 (en)
IN (1) IN2015KN00352A (en)
RU (1) RU2608167C2 (en)
WO (1) WO2014034955A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6511298B2 (en) * 2015-03-12 2019-05-15 株式会社リコー CPT resonance generation method, CPT resonance detection method, CPT resonance generator, atomic oscillator, magnetic sensor
JP6627335B2 (en) * 2015-09-01 2020-01-08 セイコーエプソン株式会社 Quantum interference devices, atomic oscillators, and electronics
CN106877865B (en) * 2017-01-10 2018-08-28 清华大学 Alkali metal gas chamber atomic clock system
JP2023021719A (en) * 2021-08-02 2023-02-14 日本電気株式会社 Quantum interference device, atomic oscillator and control method
CN114675524B (en) * 2022-04-08 2024-02-09 湖北科技学院 Miniature CPT atomic clock physical system device

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JPH03101419A (en) 1989-09-14 1991-04-26 Nippon Telegr & Teleph Corp <Ntt> Optical trap system atomic oscillator
US5491451A (en) * 1994-11-17 1996-02-13 Ball Corporation Method and apparatus for reduction of atomic frequency standard phase noise
US6320472B1 (en) * 1999-01-26 2001-11-20 Kernco, Inc. Atomic frequency standard
IT1307355B1 (en) * 1999-10-05 2001-11-06 Istituto Elettrotecnico Naz Ga APPARATUS FOR GENERATING A REFERENCE FREQUENCY.
DE60044137D1 (en) * 1999-10-05 2010-05-20 Thomson Licensing METHOD AND DEVICE FOR SUPPLYING POTS SERVICES IN A DSL ENVIRONMENT
US6363091B1 (en) 2000-06-05 2002-03-26 Agilent Technologies, Inc Coherent population trapping-based method for generating a frequency standard having a reduced magnitude of total a.c. stark shift
ATE445922T1 (en) * 2002-04-09 2009-10-15 California Inst Of Techn ATOMIC CLOCK BASED ON AN OPTOELECTRONIC OSCILLATOR
US7098744B2 (en) * 2002-12-18 2006-08-29 Hrl Laboratories, Llc Method and apparatus for generating two frequencies having a frequency separation equal to the atomic frequency of an atomic species
US6993058B2 (en) * 2003-04-28 2006-01-31 Agilent Technologies, Inc. Coherent population trapping detector
US7345553B2 (en) * 2004-03-18 2008-03-18 Agilent Technologies, Inc. Method and apparatus for reducing errors due to line asymmetry in devices utilizing coherent population trapping
FR2868558B1 (en) 2004-03-30 2006-06-30 Centre Nat Rech Scient Cnrse METHOD FOR GENERATING AN ATOMIC CLOCK SIGNAL WITH COHERENT POPULATION TRAPPING AND CORRESPONDING ATOMIC CLOCK
JP3969666B2 (en) 2005-04-15 2007-09-05 財団法人電力中央研究所 Tunable laser device
US20110051763A1 (en) 2005-12-14 2011-03-03 Kernco, Inc. Determining and setting the frequency modulation index of a laser in a CPT frequency standard
US20090289728A1 (en) * 2008-05-23 2009-11-26 Accubeat Ltd. Atomic frequency standard based on phase detection
JP5381400B2 (en) 2009-02-06 2014-01-08 セイコーエプソン株式会社 Quantum interferometers, atomic oscillators, and magnetic sensors
US8237514B2 (en) 2009-02-06 2012-08-07 Seiko Epson Corporation Quantum interference device, atomic oscillator, and magnetic sensor
JP5429469B2 (en) 2009-09-07 2014-02-26 セイコーエプソン株式会社 Quantum interference device, atomic oscillator and magnetic sensor
JP2011091476A (en) 2009-10-20 2011-05-06 Seiko Epson Corp Atomic oscillator
JP2011158384A (en) 2010-02-02 2011-08-18 Seiko Epson Corp Particulate detector
JP5640490B2 (en) * 2010-06-21 2014-12-17 セイコーエプソン株式会社 Atomic oscillator
JP2012209534A (en) 2011-03-17 2012-10-25 Ricoh Co Ltd Surface-emitting laser element, atomic oscillator, and method for checking surface-emitting laser element
JP2013243329A (en) 2011-07-07 2013-12-05 Ricoh Co Ltd Surface emitting laser element and atomic oscillator
JP6031787B2 (en) 2011-07-13 2016-11-24 株式会社リコー Method for manufacturing atomic oscillator
JP6303255B2 (en) 2011-12-02 2018-04-04 株式会社リコー Surface emitting laser element and atomic oscillator
US9200960B2 (en) * 2013-04-26 2015-12-01 Entanglement Technologies, Inc. Cavity enhanced absorption spectroscopy with a laser modulation side-band frequency locked to the cavity

Also Published As

Publication number Publication date
US9444476B2 (en) 2016-09-13
JP6124536B2 (en) 2017-05-10
US20150222285A1 (en) 2015-08-06
RU2015111233A (en) 2016-10-20
EP2891247A4 (en) 2015-10-28
WO2014034955A1 (en) 2014-03-06
BR112015004639A2 (en) 2017-07-04
JP2014049886A (en) 2014-03-17
CN104685788A (en) 2015-06-03
CN104685788B (en) 2017-11-03
RU2608167C2 (en) 2017-01-17
EP2891247A1 (en) 2015-07-08

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