Bulk Acoustic Wave Resonator-Oscillators and Tests of Fundamental Physics

Research output: Chapter in Book/Conference paperConference paper

Abstract

Quartz Bulk Acoustic Wave resonator-oscillators are amongst the best oscillators for frequency control applications. We will present our latest results for using such oscillators and resonators to improve the precision and test fundamental physics. For instance, we have set up new experiments to test for Lorentz invariance violations, to search for Dark Matter and high frequency Gravitational Wave radiation. The former uses stable room temperature oscillators and the later uses cryogenic resonators cooled to low temperatures. At cryogenic temperatures such resonators have been shown to have record acoustic Q factors of more than a billion near 4 K and above 100 MHz. Such high values also suggest low phase noise and highly frequency-stabilized oscillators should be possible. We have realized a Pound stabilized cryogenic oscillator from one such mode near 116 MHz. Despite the extremely high Q-factors, we find that the power-frequency sensitivity is increased by a factor of 1000 at cryogenic temperatures, which limits the purity of the oscillator signal at low temperatures. To realise the full potential of such a stable oscillator, this dependence must be understood and dealt with. Details of the oscillator stabilisation system and noise floor analysis will be presented.

Original languageEnglish
Title of host publicationIFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings
PublisherIEEE, Institute of Electrical and Electronics Engineers
ISBN (Electronic)9781538683057
DOIs
Publication statusPublished - 2019
Event2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, IFCS/EFTF 2019 - Orlando, United States
Duration: 14 Apr 201918 Apr 2019
https://ifcs-eftf2019.org/

Publication series

NameIFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings

Conference

Conference2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, IFCS/EFTF 2019
Abbreviated titleIFCS/EFTF 2019
CountryUnited States
CityOrlando
Period14/04/1918/04/19
Internet address

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Cite this

Goryachev, M., Ivanov, E. N., Tobar, M. E., & Galliou, S. (2019). Bulk Acoustic Wave Resonator-Oscillators and Tests of Fundamental Physics. In IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings [8856114] (IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings). IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/FCS.2019.8856114