Cryogenic Whispering Gallery Sapphire Oscillator for Microwave Frequency Standard Applications

K. Watabe; Y. Koga; S. Ohshima; T. Ikegami; John Hartnett

Cryogenic Whispering Gallery Sapphire Oscillator for Microwave Frequency Standard Applications

K. Watabe, Y. Koga, S. Ohshima, T. Ikegami, John Hartnett

Graduate Research School

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

2 Citations (Scopus)

Abstract

A cryogenic Whispering Gallery sapphire resonator oscillator has been investigated using a 4 K pulse-tube cryocooler. The turnover temperature of the chosen mode in the sapphire crystal was 9.17 K with an unloaded Q-factor of 7 x 10(8). The prototype sapphire-loaded cavity oscillator was designed to oscillate at 9.195 GHz. A fractional frequency stability of 2 x 10(-13) was measured at integration times of 10s.

Original language	English
Pages (from-to)	1640-1642
Journal	IEICE Transactions on Electronics
Volume	E87-C
Issue number	9
Publication status	Published - 2004

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title = "Cryogenic Whispering Gallery Sapphire Oscillator for Microwave Frequency Standard Applications",

abstract = "A cryogenic Whispering Gallery sapphire resonator oscillator has been investigated using a 4 K pulse-tube cryocooler. The turnover temperature of the chosen mode in the sapphire crystal was 9.17 K with an unloaded Q-factor of 7 x 10(8). The prototype sapphire-loaded cavity oscillator was designed to oscillate at 9.195 GHz. A fractional frequency stability of 2 x 10(-13) was measured at integration times of 10s.",

author = "K. Watabe and Y. Koga and S. Ohshima and T. Ikegami and John Hartnett",

year = "2004",

language = "English",

volume = "E87-C",

pages = "1640--1642",

journal = "IEICE Transactions on Electronics",

issn = "0916-8524",

publisher = "Maruzen Co., Ltd/Maruzen Kabushikikaisha",

number = "9",

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T1 - Cryogenic Whispering Gallery Sapphire Oscillator for Microwave Frequency Standard Applications

AU - Watabe, K.

AU - Koga, Y.

AU - Ohshima, S.

AU - Ikegami, T.

AU - Hartnett, John

PY - 2004

Y1 - 2004

N2 - A cryogenic Whispering Gallery sapphire resonator oscillator has been investigated using a 4 K pulse-tube cryocooler. The turnover temperature of the chosen mode in the sapphire crystal was 9.17 K with an unloaded Q-factor of 7 x 10(8). The prototype sapphire-loaded cavity oscillator was designed to oscillate at 9.195 GHz. A fractional frequency stability of 2 x 10(-13) was measured at integration times of 10s.

AB - A cryogenic Whispering Gallery sapphire resonator oscillator has been investigated using a 4 K pulse-tube cryocooler. The turnover temperature of the chosen mode in the sapphire crystal was 9.17 K with an unloaded Q-factor of 7 x 10(8). The prototype sapphire-loaded cavity oscillator was designed to oscillate at 9.195 GHz. A fractional frequency stability of 2 x 10(-13) was measured at integration times of 10s.

M3 - Article

SN - 0916-8524

VL - E87-C

SP - 1640

EP - 1642

JO - IEICE Transactions on Electronics

JF - IEICE Transactions on Electronics

IS - 9

ER -

Cryogenic Whispering Gallery Sapphire Oscillator for Microwave Frequency Standard Applications

Abstract

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