Title:
GYROSCOPE BASED ON MACH-ZEHNDER-TYPE ATOMIC INTERFERENCE
Document Type and Number:
WIPO Patent Application WO/2019/073657
Kind Code:
A1
Abstract:
The present invention includes: a traveling light standing wave generation unit 301 for generating three traveling light standing waves 201a, 201b, 201c; an atomic beam source 101 for continuously generating an atomic beam 101a in which individual atoms are in the same state; an interference unit 201 in which the Sagnac effect is exhibited as a result of the interaction between the atomic beam 101a and the three traveling light standing waves 201a, 201b, 201c; and an observation unit 400 which detects angular velocity or acceleration by observing the atomic beam 101b from the interference unit 201. Each of the traveling light standing waves satisfies n-order Bragg conditions when n is a positive integer of 2 or higher.
Inventors:
KOZUMA MIKIO (JP)
INOUE RYOTARO (JP)
MUKAIYAMA TAKASHI (JP)
MORIMOTO SEIICHI (JP)
YOSHIOKA KAZUNORI (JP)
TANAKA ATSUSHI (JP)
KAMINO YUICHIRO (JP)
INOUE RYOTARO (JP)
MUKAIYAMA TAKASHI (JP)
MORIMOTO SEIICHI (JP)
YOSHIOKA KAZUNORI (JP)
TANAKA ATSUSHI (JP)
KAMINO YUICHIRO (JP)
Application Number:
PCT/JP2018/027827
Publication Date:
April 18, 2019
Filing Date:
July 25, 2018
Export Citation:
Assignee:
TOKYO INST TECH (JP)
UNIV OSAKA (JP)
JAPAN AVIATION ELECTRONICS IND LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
UNIV OSAKA (JP)
JAPAN AVIATION ELECTRONICS IND LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
G01C19/58
Foreign References:
| JP2008544284A | 2008-12-04 | |||
| JP2017015685A | 2017-01-19 | |||
| US20170370840A1 | 2017-12-28 |
Other References:
HU , QINGQING ET AL.: "A theoretical analysis and determination of the technical requirements for a Bragg diffraction-based cold atom interferometry gravimeter", INTERNATIONAL JOURNAL FOR LIGHT AND ELECTRON OPTICS, vol. 2016, 2016, pages 1 - 9, XP081234231
DELHUILLE, R. ET AL.: "High contrast Mach-Zehnder lithium atom interferometer in the Bragg regime", APPLIED PHYSICS B LASERS AND OPTICS, vol. 74, no. 6, March 2002 (2002-03-01), pages 489 - 493, XP055593513
MORINAGA, ATSUO: "Atom Interferometry with Cold Atoms for Precise Measurement", JAPANESE JOURNAL OF OPTICS, vol. 37, no. 7, 10 July 2008 (2008-07-10), pages 376 (16) - 382 (22), XP009519975, ISSN: 0389-6625
T. L. GUSTAVSONP. BOUYERM. A. KASEVICH: "Precision Rotation Measurements with an Atom Interferometer Gyroscope", PHYS. REV. LETT., vol. 78, 17 March 1997 (1997-03-17), pages 2046 - 2049, XP055254680, DOI: 10.1103/PhysRevLett.78.2046
J. SCHOSER ET AL.: "Intense source of cold Rb atoms from a pure two-dimensional magneto-optical trap", PHYS. REV. A, vol. 66, 26 August 2002 (2002-08-26), pages 023410
TAKATOSHI AOKI ET AL.: "High-finesse atomic multiple-beam interferometer comprised of copropagating stimulated Raman-pulse fields", PHYS. REV. A, vol. 63, 16 May 2001 (2001-05-16), pages 063611
See also references of EP 3680614A4
DELHUILLE, R. ET AL.: "High contrast Mach-Zehnder lithium atom interferometer in the Bragg regime", APPLIED PHYSICS B LASERS AND OPTICS, vol. 74, no. 6, March 2002 (2002-03-01), pages 489 - 493, XP055593513
MORINAGA, ATSUO: "Atom Interferometry with Cold Atoms for Precise Measurement", JAPANESE JOURNAL OF OPTICS, vol. 37, no. 7, 10 July 2008 (2008-07-10), pages 376 (16) - 382 (22), XP009519975, ISSN: 0389-6625
T. L. GUSTAVSONP. BOUYERM. A. KASEVICH: "Precision Rotation Measurements with an Atom Interferometer Gyroscope", PHYS. REV. LETT., vol. 78, 17 March 1997 (1997-03-17), pages 2046 - 2049, XP055254680, DOI: 10.1103/PhysRevLett.78.2046
J. SCHOSER ET AL.: "Intense source of cold Rb atoms from a pure two-dimensional magneto-optical trap", PHYS. REV. A, vol. 66, 26 August 2002 (2002-08-26), pages 023410
TAKATOSHI AOKI ET AL.: "High-finesse atomic multiple-beam interferometer comprised of copropagating stimulated Raman-pulse fields", PHYS. REV. A, vol. 63, 16 May 2001 (2001-05-16), pages 063611
See also references of EP 3680614A4
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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