title: Quartz resonator instabilities under cryogenic conditions.
abstract: The phase noise of a quartz crystal resonator working at liquid helium temperatures is studied. Measurement methods and the device environment are explained. The phase noise is measured for different resonance modes, excitation levels, amount of operating time, device orientations in relation to the cryocooler vibration axis, and temperatures. Stability limits of a frequency source based on such devices are evaluated in the present measurement conditions. The sources of phase flicker and white noises are identified. Finally, the results are compared with previous works.
authors.affiliation: Time and Frequency Department of the Franche-Comté Electronique, Mécanique, Thermique et Optique–Sciences et Technologies (FEMTO-ST) Institute, Besancon, France. maxim.goryachev@femto-st.fr
authors.forename: Maxim
authors.initials: M
authors.lastname: Goryachev
authors.forename: Serge
authors.initials: S
authors.lastname: Galliou
authors.forename: Philippe
authors.initials: P
authors.lastname: Abbe
authors.forename: Pierre-Yves
authors.initials: PY
authors.lastname: Bourgeois
authors.forename: Serge
authors.initials: S
authors.lastname: Grop
authors.forename: Benoit
authors.initials: B
authors.lastname: Dubois