公开(公告)号：US09927501B2

公开(公告)日：2018-03-27

申请号：US14573718

申请日：2014-12-17

Applicant: Korea Research Institute of Standards and Science

Inventor： Kiwoong Kim ,  Hyun-joon Lee ,  Jeong-Hyun Shim

IPC: G01R33/26 ,  G01R33/032

CPC classification number: G01R33/26 ,  G01R33/032

Abstract: Provided are an atomic magnetometer and an operating method of the same. The atomic magnetometer includes a vapor cell receiving a circularly polarized pump beam and a linearly polarized probe beam and containing an alkali metal vapor, a detector adapted to receive the probe beam passing through the vapor cell to measure magneto-optical rotation of the probe beam, a feedback coil to establish a negative feedback magnetic field signal orthogonal to a first plane defined by traveling directions of the probe beam and the pump beam and provide the negative feedback magnetic field signal to the vapor cell, and a feedback amplifier adapted to provide feedback current to the feedback coil such that the negative feedback magnetic field proportional to a measurement magnetic field is established. The measurement magnetic field of a measurement target provides magneto-optical rotation of the probe beam in the vapor cell.

公开(公告)号：US20160116553A1

公开(公告)日：2016-04-28

申请号：US14573718

申请日：2014-12-17

Applicant: Korea Research Institute of Standards and Science

Inventor： Kiwoong Kim ,  Hyun-joon Lee ,  Jeong-Hyun Shim

IPC: G01R33/26 ,  G01R33/032

CPC classification number: G01R33/26 ,  G01R33/032

Abstract: Provided are an atomic magnetometer and an operating method of the same. The atomic magnetometer includes a vapor cell receiving a circularly polarized pump beam and a linearly polarized probe beam and containing an alkali metal vapor, a detector adapted to receive the probe beam passing through the vapor cell to measure magneto-optical rotation of the probe beam, a feedback coil to establish a negative feedback magnetic field signal orthogonal to a first plane defined by traveling directions of the probe beam and the pump beam and provide the negative feedback magnetic field signal to the vapor cell, and a feedback amplifier adapted to provide feedback current to the feedback coil such that the negative feedback magnetic field proportional to a measurement magnetic field is established. The measurement magnetic field of a measurement target provides magneto-optical rotation of the probe beam in the vapor cell.

Abstract translation: 提供了一种原子磁强计及其操作方法。 原子磁强计包括接收圆偏振泵浦光束和线性偏振探测光束并含有碱金属蒸气的蒸汽单元，适于接收通过蒸气室的探测光束以测量探测光束的磁旋转的检测器， 反馈线圈，用于建立与由所述探测光束和所述泵浦光束的行进方向限定的第一平面正交的负反馈磁场信号，并向所述蒸汽单元提供所述负反馈磁场信号;以及反馈放大器，其适于提供反馈电流 到反馈线圈，使得与测量磁场成比例的负反馈磁场被建立。 测量对象的测量磁场提供了探测光束在蒸气室中的磁光旋转。