The implementation of high speed digital PSD in optically pumping magnetometers

Jun Chen; Defu Cheng; Zhijian Zhou; Ming Ma; Chao Wang; Ruifan Hu

doi:10.1117/12.2265272

23 January 2017 The implementation of high speed digital PSD in optically pumping magnetometers

Jun Chen, Defu Cheng, Zhijian Zhou, Ming Ma, Chao Wang, Ruifan Hu

Proceedings Volume 10322, Seventh International Conference on Electronics and Information Engineering; 103220Q (2017) https://doi.org/10.1117/12.2265272
Event: Seventh International Conference on Electronics and Information Engineering, 2016, Nanjing, China

Abstract

The ⁴He optically pumping magnetometer is a kind of high resolution instrument for measuring magnetic field intensity. Its response speed cannot meet the requirements in some experiments. By analyzing many factors, Phase Sensitive Detector (PSD) which is the key part of the lock-in amplifier processes data at a very slow speed is found. To improve its performance, this paper introduces a parallel digital phase sensitive detector based on coordinate rotation digital computer (CORDIC) algorithm. The cost time of the parallel digital phase sensitive detector is only 5.1% of the previous one. It can greatly enhance the response speed of the ⁴He optically pumping magnetometer.

Citation Download Citation

Jun Chen, Defu Cheng, Zhijian Zhou, Ming Ma, Chao Wang, and Ruifan Hu "The implementation of high speed digital PSD in optically pumping magnetometers", Proc. SPIE 10322, Seventh International Conference on Electronics and Information Engineering, 103220Q (23 January 2017); https://doi.org/10.1117/12.2265272

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