• Acta Photonica Sinica
  • Vol. 53, Issue 5, 0553108 (2024)
Jianfei LIU, Zhigang HU, Yimeng GAO, and Beibei LI*
Author Affiliations
  • Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China
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    DOI: 10.3788/gzxb20245305.0553108 Cite this Article
    Jianfei LIU, Zhigang HU, Yimeng GAO, Beibei LI. Optical Microcavity Magnetic Sensors(Invited)[J]. Acta Photonica Sinica, 2024, 53(5): 0553108 Copy Citation Text show less
    Schematic diagram of three kinds of optical microcavity structures
    Fig. 1. Schematic diagram of three kinds of optical microcavity structures
    Schematic diagram of the mechanism of optical microcavity magnetic sensors
    Fig. 2. Schematic diagram of the mechanism of optical microcavity magnetic sensors
    Magnetic sensors based on magnetostriction effect
    Fig. 3. Magnetic sensors based on magnetostriction effect
    Magnetic sensors based on magnetic-field-induced torque
    Fig. 4. Magnetic sensors based on magnetic-field-induced torque
    Magnetic sensors based on magneto-optic effect
    Fig. 5. Magnetic sensors based on magneto-optic effect
    Different kinds of optical microcavity magnetic sensorsSizeDetection limitResponsibilityFrequencyReference
    Magnetostrictive magnetic sensors~104 μm3400 nT/Hz1/2*11.5 MHz17
    ~104 μm3200 pT/Hz1/2*17 MHz43R
    ~104 μm326 pT/Hz1/2*11.3 MHz44
    ~104 μm3585 pT/Hz1/2*8.48 MHz45
    ~109 μm3880 pT/Hz1/2*200 Hz47
    ~104 μm32 μT/ Hz1/2*3.55 MHz48
    ~104 μm3150 nT/Hz1/2*2 Hz~1 kHz43R
    ~1012 cm3131 pT/Hz1/2*100 kHz49
    ~109 μm3146 pT/Hz1/2*16.85 kHz50
    Torque magnetic sensors~102 μm30.046 pT/Hz1/2*+7.2 MHz52
    ~102 μm30.23 aT/Hz1/2*+14.5 MHz53
    Magneto-optic magnetic sensors~109 μm30.43 nm/mTDC57
    ~105 μm30.53 nm/mTDC58
    10.260 2 nm/mTDC59
    ~109 μm32.2 mT75.7 pm/mTDC60
    ~106 μm330 μT2.15 pm/mTDC61
    Table 1. Performance summary of different kinds of optical microcavity magnetic sensors
    Jianfei LIU, Zhigang HU, Yimeng GAO, Beibei LI. Optical Microcavity Magnetic Sensors(Invited)[J]. Acta Photonica Sinica, 2024, 53(5): 0553108
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