商业常流电源的电流噪声的特征通过使用光学的鲁比原子磁力计
Ni Zhao1, Lulu Zhang1, Yongbiao Yang1
1State Key Laboratory of Quantum Optics and Quantum Optics Devices and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, Shanxi Province, China.
The Review of scientific instruments
|September 1, 2023
概括
研究人员开发了一种新方法,使用原子磁力计测量恒流源 (CCS) 中的电流噪声. 基视B2961A显示了最低的电流噪声,这对于高灵敏度原子磁力计至关重要.
科学领域:
- 计量学和科学仪器仪表技术
- 原子物理和磁力测量 原子物理和磁力测量
- 电气工程和应用物理学
背景情况:
- 在恒流源 (CCS) 中描述当前噪声对于精确测量至关重要.
- 光学的原子磁力计提供高灵敏度,但需要稳定的电流来源.
- 现有的CCS噪声表征方法可能缺乏足够的精度来满足先进的应用.
研究的目的:
- 引入和验证一种用于描述商业CCS当前噪声的新方法.
- 为了比较各种商用低噪音CCS的当前噪音性能.
- 为了确定CCS噪声和原子磁力计灵敏度之间的关系.
主要方法:
- 使用一种自由诱导衰变 (FID) 类型的光学制的原子磁计.
- 用无线电频率磁场驱动原子磁计.
- 校准了线圈常数以将磁力计的灵敏度转换为CCS电流噪声.
主要成果:
- 通过利用原子磁力计的灵敏度,成功地描述了CCS电流噪声.
- 确定Keysight模型B2961A在六个测试的CCS中,当前噪声最低.
- 量化了噪声水平: 36.233 ± 0.022 nA/Hz1/2 (1-25 Hz) 和 133.905 ± 0.080 nA/Hz1/2 (1-100 Hz) 对于B2961A. 的情况.
结论:
- 开发的方法提供了一种有效的方式来评估CCS电流噪声.
- 低噪音CCS对于提高高灵敏度原子磁力仪的性能至关重要.
- 这项研究作为推进精确CCS,计量学和基本物理学的参考.
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