Design of a current source for unshielded atomic magnetometer based on SERF regime

LIN Hong-bo; DONG Hai-feng; ZHUO Chao; XUAN Li-feng

doi:10.13873/j.1000-97872012.12.036

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Design of a current source for unshielded atomic magnetometer based on SERF regime

更新时间：2025-09-11

- Design of a current source for unshielded atomic magnetometer based on SERF regime
- Vol. 31, Issue 12, Pages: 83-86(2012)
- 作者机构：
  
  北京航空航天大学仪器科学与光电工程学院惯性技术重点实验室新型惯性仪表与导航系统技术国防重点学科实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.12.036
  CLC： TP212
- Published：2012
- 稿件说明：
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[1]林宏波,董海峰,卓超,宣立峰.一种用于非屏蔽SERF态原子磁强计的电流源设计[J].传感器与微系统,2012,31(12):83-86.

LIN Hong-bo, DONG Hai-feng, ZHUO Chao, et al. Design of a current source for unshielded atomic magnetometer based on SERF regime[J]. 2012, 31(12): 83-86.
[1]林宏波,董海峰,卓超,宣立峰.一种用于非屏蔽SERF态原子磁强计的电流源设计[J].传感器与微系统,2012,31(12):83-86. DOI： 10.13873/j.1000-97872012.12.036.

LIN Hong-bo, DONG Hai-feng, ZHUO Chao, et al. Design of a current source for unshielded atomic magnetometer based on SERF regime[J]. 2012, 31(12): 83-86. DOI： 10.13873/j.1000-97872012.12.036.

摘要

设计了一种用于非屏蔽SERF态原子磁强计的电流源。利用运算放大器和MOSFET构建基本的电流负反馈V/I转换电路

采用高性能元器件降低输出电流纹波

并通过频率补偿的方法使电路稳定。测试结果表明:在恒负载的条件下

电流源的输出范围为0～500mA

纹波电流小于30.5μA

对应磁场的稳定性优于10 nT

满足非屏蔽情况下原子磁强计利用磁补偿制备SERF态的要求。

Abstract

A current source is proposed for unshielded atomic magnetometer based on spin-exchange relaxation free（SERF）regime.It uses operational amplifier and MOSFET to construct basic V/I change-over circuit

and high-performance components is used to reduce the ripple of output current

then stablizes the circuit by frequency compensation method.The test results show that the current source output range 0

00 mA

and the ripple current is less than 30.5 μA when the load is invariable

the stability of corresponding magnetic field is prior to 10 nT

which meets the requirements of SERF regime atomic magnetometer for unshielded applications.

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references

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