Title :
Cryo-cooled sapphire oscillator with ultra-high stability
Author :
Wang, R.T. ; Dick, G.J.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
We present design details and test results for the first short-term frequency standard to achieve ultra-high stability (/spl sigma//sub y/<10/sup -14/) without the use of liquid helium. Technical features include vibration isolation by atmospheric helium gas and a new sapphire resonator design with adjustable compensation operating at 8-10 K.
Keywords :
compensation; cooling; crystal oscillators; frequency stability; frequency standards; low-temperature techniques; sapphire; vibration isolation; 8 to 10 K; Al/sub 2/O/sub 3/; adjustable compensation; atmospheric helium gas; cryo-cooled sapphire oscillator; cryocooler; frequency stability; maser reference; sapphire resonator design; short-term frequency standard; ultrahigh stability; vibration isolation; Cooling; Cryogenics; Frequency; Helium; Laboratories; Oscillators; Phase noise; Stability; Temperature; Testing;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699778
