Polymer encapsulated microcavity optomechanical magnetometer

Zhu, Jiangang; Zhao, Guangming; Savukov, Igor; Yang, Lan

doi:10.1038/s41598-017-08875-1

Title: Polymer encapsulated microcavity optomechanical magnetometer

Journal Article · Mon Aug 21 00:00:00 EDT 2017 · Scientific Reports

DOI:https://doi.org/10.1038/s41598-017-08875-1· OSTI ID:1396126

Zhu, Jiangang ^[1]; Zhao, Guangming ^[2]; Savukov, Igor ^[1]; Yang, Lan ^[2]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Washington Univ., St. Louis, MO (United States)

We demonstrate a magnetometer using polymer encapsulated whispering-gallery-mode microcavity actuated by a micro-magnet. The magnetic field induces force on the micro-magnet causing deformation in the polymer around the microcavity. Subsequently the microcavity detects the change in the refractive index of the polymer resulted from the deformation. This magnetometer works in the frequency range of hertz-to-kilohertz range and achieves a sensitivity of 880 pT/Hz^1/2 at 200 Hz in a micro-scale sensor volume. Polymer encapsulation of the magnetometer and fiber optical connection ensures environmental robustness and practicality of the sensor.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1396126

Report Number(s):: LA-UR-17-22375

Journal Information:: Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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References (23)

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Quantum enhanced optomechanical magnetometry Li, Bei-Bei; Bílek, Jan; Hoff, Ulrich B. Optica, Vol. 5, Issue 7 https://doi.org/10.1364/optica.5.000850	journal	January 2018
Quantum enhanced optomechanical magnetometry Li, Bei-Bei; Bilek, Jan; Hoff, Ulrich B. arXiv https://doi.org/10.48550/arxiv.1802.09738	text	January 2018
Multi-Parameter Sensing in a Multimode Self-Interference Micro-Ring Resonator by Machine Learning Hu, Dong; Zou, Chang-ling; Ren, Hongliang Sensors, Vol. 20, Issue 3 https://doi.org/10.3390/s20030709	journal	January 2020
Invited Article: Scalable high-sensitivity optomechanical magnetometers on a chip Li, Bei-Bei; Bulla, Douglas; Prakash, Varun APL Photonics, Vol. 3, Issue 12 https://doi.org/10.1063/1.5055029	journal	December 2018
Whispering Gallery Modes at THz Prabhu, Shriganesh S.; Achanta, Venu Gopal Advanced Optical Materials, Vol. 8, Issue 3 https://doi.org/10.1002/adom.201900973	journal	September 2019
Wireless whispering-gallery-mode sensor for thermal sensing and aerial mapping Xu, Xiangyi; Chen, Weijian; Zhao, Guangming Light: Science & Applications, Vol. 7, Issue 1 https://doi.org/10.1038/s41377-018-0063-4	journal	September 2018

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