Optomechanical magnetometry with a macroscopic resonator

Yu, Changqiu, Janousek, Jiri, Sheridan, Eoin, McAuslan, David L., Rubinsztein-Dunlop, Halina, Lam, Ping Koy, Zhang, Yundong and Bowen, Warwick P. (2016) Optomechanical magnetometry with a macroscopic resonator. Physical Review Applied, 5 4: 1-6. doi:10.1103/PhysRevApplied.5.044007


Author Yu, Changqiu
Janousek, Jiri
Sheridan, Eoin
McAuslan, David L.
Rubinsztein-Dunlop, Halina
Lam, Ping Koy
Zhang, Yundong
Bowen, Warwick P.
Title Optomechanical magnetometry with a macroscopic resonator
Journal name Physical Review Applied   Check publisher's open access policy
ISSN 2331-7019
Publication date 2016-04
Year available 2016
Sub-type Article (original research)
DOI 10.1103/PhysRevApplied.5.044007
Open Access Status Not Open Access
Volume 5
Issue 4
Start page 1
End page 6
Total pages 6
Place of publication College Park, MD United States
Publisher American Physical Society
Collection year 2017
Language eng
Formatted abstract
We demonstrate a centimeter-scale optomechanical magnetometer based on a crystalline whispering-gallery-mode resonator. The large size of the resonator, with a magnetic-field integration volume of 0.45 cm3 , allows high magnetic-field sensitivity to be achieved in the hertz-to-kilohertz frequency range. A peak sensitivity of 131 pT Hz-1/2 is reported, in a magnetically unshielded noncryogenic environment using optical power levels beneath 100µW. Femtotesla-range sensitivity may be possible in future devices with the further optimization of laser noise and the physical structure of the resonator, allowing applications in high-performance magnetometry.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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