Cryogenic whispering gallery sapphire oscillator using 4 K pulse-tube cryocooler

被引：0
|
作者：
Watabe, K [1 ]
Koga, Y [1 ]
Ohshima, S [1 ]
Ikegami, T [1 ]
Hartnett, JG [1 ]
机构：
[1] AIST, Natl Metrol Inst Japan, Tsukuba, Ibaraki 3058563, Japan
来源：
PROCEEDINGS OF THE 2003 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM & PDA EXHIBITION JOINTLY WITH 17TH EUROPEAN FREQUENCY AND TIME FORUM | 2003年
关键词：
sapphire; whispering gallery mode; 4 K pulse-tube cryocooler; oscillator;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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 9.169 K with an unloaded Q-factor of 7 x 10(8). The prototype SLC oscillator was designed to oscillate at 9.195 GHz and exhibited a fractional frequency stability of 2 x 10(-13) at integration times of 10 s. We project a fractional frequency stability better than 1 part in 10(-14) for integration times of 1 s to 100 s with a better temperature stabilized housing and with improved vibration isolation.
引用
收藏
页码：388 / 390
页数：3
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