상세정보
학술지
Optimization of a Radio-frequency Atomic Magnetometer Toward Very Low Frequency Signal Reception
- 발행일
- 202106
- 출처
- Current Optics and Photonics, v.5 no.3, pp.213-219
- ISSN
- 2508-7266
- 출판사
- 한국광학회
- 협약과제
- 21HH2300, [전문연구실] 10pT급 미소자계 기반 중장거리 자기장 통신기술, 조인귀
- 초록
- We describe a single-channel rubidium (Rb) radio-frequency atomic magnetometer (RFAM) as a receiver that takes magnetic signal resonating with Zeeman splitting of the ground state of Rb. We optimize the performance of the RFAM by recording the response signal and signal-to-noise ratio (SNR) in various parameters and obtain a noise level of 159 fT/√Hz around 30 kHz. When a resonant radiofrequency magnetic field with a peak amplitude of 8.0 nT is applied, the bandwidth and signal-to-noise ratio are about 650 Hz and 88 dB, respectively. It is a good agreement that RFAM using alkali atoms is suitable for receiving signals in the very low frequency (VLF) carrier band, ranging from 3 kHz to 30 kHz. This study shows the new capabilities of the RFAM in communications applications based on magnetic signals with the VLF carrier band. Such communication can be expected to expand the communication space by overcoming obstacles through the high magnetic sensitive RFAM.
- KSP 제안 키워드
- 50 Hz, Communication space, Frequency signal, High magnetic, Magnetic field(MF), Magnetic signal, Overcoming obstacles, Peak amplitude, Radio Frequency(RF), Response signal, Signal noise ratio(SNR)
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