Magnetic detection research based on magnetic fluid and laser internal cavity modulation
In this paper we present a magnetic probe structure based on magneto-fluidic and laser internal cavity modulation. We used a single-mode-no-core-single-mode fiber structure coated by a magnetic fluid as a sensing element, and inserted the sensing element in the inner cavity of a laser. Highly sensitive, high signal-to-noise ratio (SNR), narrow half-height width (FWHM) sensing signals have been obtained using intra-laser cavity modulation. The magnetic detection sensitivity of the sensor was improved, and a sensing system with a magnetic detection sensitivity of 1.76 × 10<sup>-3</sup> mw/Oe and a linearity of 99.709% was achieved.
Authors
- Yan Yang (ORCID: https://orcid.org/0000-0002-3979-7438)
- Tianzhi Liu
- Wenqi ZHANG
- X. L. Cao (ORCID: https://orcid.org/0009-0009-3164-2958)
- Yan Liu (ORCID: https://orcid.org/0000-0002-9904-4438)
- Jun Ye (ORCID: https://orcid.org/0000-0003-0076-2112)
- Jianquan Yao (ORCID: https://orcid.org/0000-0003-3105-4370)
- Xiaowu Li (ORCID: https://orcid.org/0000-0002-0238-9107)
- Degang Xu (ORCID: https://orcid.org/0000-0003-1730-9410)
- Haodong Liu (ORCID: https://orcid.org/0009-0002-8529-3051)
Institutions
- Tianjin University (CN)
- Ministry of Natural Resources (CN)
- Kelun Group (China) (CN)
- Ministry of Water Resources of the People's Republic of China (CN)
- Laoshan Laboratory
- Ocean University of China (CN)
Publication Details
- Published
- 2025-02-20
- DOI
- https://doi.org/10.1117/12.3057258
- Primary Topic
- Surface Roughness and Optical Measurements
- Type
- article
- Field-Weighted Citation Impact
- 0.00