Title :
Temperature control for sub-10-16 fractional frequency stability
Author :
Oxborrow, Mark ; Hodge, Clifford C. ; Radcliffe, Bill
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
This paper examines the need for improved temperature control in present and future generations of frequency standards. We present a novel design for a cryogenic resistance bridge and show how a low frequency a.c. drive with a synchronous detector can provide μK sensitivity with the possibility of at least two orders of magnitude further precision available
Keywords :
bridge circuits; frequency stability; frequency standards; low-temperature techniques; resistance thermometers; temperature control; cryogenic resistance bridge; electronic readout scheme; fractional frequency stability; frequency standards; hermetic package; low frequency AC drive; null detector; resistance thermometry; synchronous detector; temperature clamp; temperature control; Bridges; Cryogenics; Electric resistance; Frequency; Laser stability; Masers; Optical sensors; Superconducting microwave devices; Temperature control; Temperature sensors;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840825
