Cryogenic-Sapphire-Oscillator-Based Reference Signal at 1 GHz with 10-15

K.I. Watabe; S. Yanagimachi; A. Takamizawa; T. Ikegami; S. Ohshima; G. Santarelli; Clayton Locke; John Hartnett

doi:10.1143/JJAP.47.7390

Cryogenic-Sapphire-Oscillator-Based Reference Signal at 1 GHz with 10^-15

K.I. Watabe, S. Yanagimachi, A. Takamizawa, T. Ikegami, S. Ohshima, G. Santarelli, Clayton Locke, John Hartnett

Graduate Research School

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We describe a 1 GHz reference signal with 10(-15) level fractional frequency stability for averaging times longer than 1s, synthesized from a 10.8 GHz oscillation frequency of a cyrogenic-sapphire-resonator-based ultra-stable oscillator and phase locked to a hydrogen maser with a time constant of about 1000s. The degradation of the short term stability of the reference signal by phase locking to the hydrogen maser was evaluated. We also report on the implementation of the 1 GHZ signal down converted to 5 MHz as a reference oscillator for a cesium atomic fountain frequency standard.

Original language	English
Pages (from-to)	7390-7392
Journal	Japanese Journal of Applied Physics
Volume	47
Issue number	9
DOIs	https://doi.org/10.1143/JJAP.47.7390
Publication status	Published - 2008

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10.1143/JJAP.47.7390

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title = "Cryogenic-Sapphire-Oscillator-Based Reference Signal at 1 GHz with 10-15",

abstract = "We describe a 1 GHz reference signal with 10(-15) level fractional frequency stability for averaging times longer than 1s, synthesized from a 10.8 GHz oscillation frequency of a cyrogenic-sapphire-resonator-based ultra-stable oscillator and phase locked to a hydrogen maser with a time constant of about 1000s. The degradation of the short term stability of the reference signal by phase locking to the hydrogen maser was evaluated. We also report on the implementation of the 1 GHZ signal down converted to 5 MHz as a reference oscillator for a cesium atomic fountain frequency standard.",

author = "K.I. Watabe and S. Yanagimachi and A. Takamizawa and T. Ikegami and S. Ohshima and G. Santarelli and Clayton Locke and John Hartnett",

year = "2008",

doi = "10.1143/JJAP.47.7390",

language = "English",

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pages = "7390--7392",

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T1 - Cryogenic-Sapphire-Oscillator-Based Reference Signal at 1 GHz with 10-15

AU - Watabe, K.I.

AU - Yanagimachi, S.

AU - Takamizawa, A.

AU - Ikegami, T.

AU - Ohshima, S.

AU - Santarelli, G.

AU - Locke, Clayton

AU - Hartnett, John

PY - 2008

Y1 - 2008

N2 - We describe a 1 GHz reference signal with 10(-15) level fractional frequency stability for averaging times longer than 1s, synthesized from a 10.8 GHz oscillation frequency of a cyrogenic-sapphire-resonator-based ultra-stable oscillator and phase locked to a hydrogen maser with a time constant of about 1000s. The degradation of the short term stability of the reference signal by phase locking to the hydrogen maser was evaluated. We also report on the implementation of the 1 GHZ signal down converted to 5 MHz as a reference oscillator for a cesium atomic fountain frequency standard.

AB - We describe a 1 GHz reference signal with 10(-15) level fractional frequency stability for averaging times longer than 1s, synthesized from a 10.8 GHz oscillation frequency of a cyrogenic-sapphire-resonator-based ultra-stable oscillator and phase locked to a hydrogen maser with a time constant of about 1000s. The degradation of the short term stability of the reference signal by phase locking to the hydrogen maser was evaluated. We also report on the implementation of the 1 GHZ signal down converted to 5 MHz as a reference oscillator for a cesium atomic fountain frequency standard.

U2 - 10.1143/JJAP.47.7390

DO - 10.1143/JJAP.47.7390

M3 - Article

SN - 0021-4922

VL - 47

SP - 7390

EP - 7392

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 9

ER -

Cryogenic-Sapphire-Oscillator-Based Reference Signal at 1 GHz with 10-15

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Cryogenic-Sapphire-Oscillator-Based Reference Signal at 1 GHz with 10^-15