Title:
ATOMIC OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2018/047676
Kind Code:
A1
Abstract:
[Problem] To provide a gas-cell-type atomic oscillator that ensures high frequency stability over a long period of time. [Solution] The present invention provides an atomic oscillator that comprises: a first frequency synthesizer that synthesizes a first high-frequency signal by multiplying a reference frequency signal, which is produced by oscillation of a first piezoelectric control oscillator, by a first multiplication factor; a first semiconductor laser that emits first laser light that is modulated using the first high-frequency signal; a second frequency synthesizer that synthesizes a second high-frequency signal by multiplying an output signal, which is produced by oscillation of a second piezoelectric control oscillator, by a second multiplication factor; a second semiconductor laser that emits second laser light that is modulated using the second high-frequency signal; a gas cell on which the first laser light and the second laser light are simultaneously incident, and that encloses a first alkali metal atom gas, a second alkali metal atom gas, and a buffer gas; and a computer that sets the first multiplication factor in the first frequency synthesizer.
Inventors:
GOKA SHIGEYOSHI (JP)
Application Number:
PCT/JP2017/030928
Publication Date:
March 15, 2018
Filing Date:
August 29, 2017
Export Citation:
Assignee:
UNIV TOKYO METROPOLITAN (JP)
International Classes:
H03L7/26; H01S1/06
Foreign References:
| JP2014192669A | 2014-10-06 |
Other References:
T. DRISKEL ET AL.: "Measuring Buffer-Gas Pressure in Sealed Glass Cells, Frequency Control Symposium & the European Frequency and Time Forum", 2015 JOINT CONFERENCE OF THE IEEE INTERNATIONA L, 12 April 2015 (2015-04-12), pages 474 - 479, XP033168139
D.J. SEIDEL: "Two different atomic oscillators in the same environment: A new technique for compensating perturbations., Frequency Control Symposium, 1996 50th.", PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL, 5 June 1996 (1996-06-05), pages 1223 - 1224, XP010200035
D.J. SEIDEL: "Two different atomic oscillators in the same environment: A new technique for compensating perturbations., Frequency Control Symposium, 1996 50th.", PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL, 5 June 1996 (1996-06-05), pages 1223 - 1224, XP010200035
Attorney, Agent or Firm:
MAYAMA INTERNATIONAL PATENT OFFICE (JP)
Download PDF: