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Low phase noise temperature-compensated cryogenic whispering gallery mode resonator operated at 63 K in a closed cycle cooler

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4 Author(s)
L. Hao ; Nat. Phys. Lab., Teddington, UK ; J. C. Gallop ; N. Klein ; M. Winter

Whispering gallery modes in a miniature temperature compensated composite dielectric resonator (at T/spl sim/63 K) can exhibit loaded Q/sub L/ values above 10/sup 7/ at /spl sim/10 GHz, close to the Cs atomic clock frequency. The high Q of the dielectric resonators can be used to produce low phase noise oscillators limited only by the performance of amplifiers and mixers. Effective mechanical vibration isolation is also demonstrated in a Gifford-McMahon cooler.

Published in:

Precision Electromagnetic Measurements Digest, 2000 Conference on

Date of Conference:

14-19 May 2000