公开(公告)号：US20240272243A1

公开(公告)日：2024-08-15

申请号：US18405506

申请日：2024-01-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyunjoon LEE ,  Jang Yeol KIM ,  Jung Hoon OH ,  In Kui CHO

IPC: G01R33/032

CPC classification number: G01R33/032

Abstract: An atomic magnetometer with an extended measurement bandwidth is disclosed. The atomic magnetometer includes coils configured to transmit incident pump light and a bias magnetic field and a vapor cell positioned between the coils and receiving the pump light and the bias magnetic field transmitted from the coils and irradiation light incident from a direction perpendicular to the coils, wherein the vapor cell includes both a first alkali metal atom and a second alkali metal atom, which are isotopes of one of alkali metals.

公开(公告)号：US20240039580A1

公开(公告)日：2024-02-01

申请号：US18335697

申请日：2023-06-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jang Yeol KIM ,  Jung Hoon OH ,  Jaeho LEE ,  Hyunjoon LEE ,  In Kui CHO

IPC: H04B5/00 ,  H01F38/14

CPC classification number: H04B5/0081 ,  H01F38/14 ,  H01F2038/143

Abstract: A magnetic signal receiving device and a magnetic field communication system are disclosed. The magnetic signal receiving device includes a signal detector including a magnetic sensor and configured to detect a magnetic signal using the magnetic sensor, a signal amplifier configured to amplify the magnetic signal detected by the signal detector, and a demodulator configured to restore the amplified magnetic signal received from the signal amplifier into an original signal.

公开(公告)号：US20210109173A1

公开(公告)日：2021-04-15

申请号：US17071530

申请日：2020-10-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyunjoon LEE ,  In Kui CHO ,  Jang Yeol KIM ,  Jaewoo LEE ,  Ho Jin LEE ,  Sang-Won KIM ,  Seong-Min KIM ,  Jung Ick MOON ,  Woo Cheon PARK ,  Je Hoon YUN ,  Dong Won JANG

IPC: G01R33/26

Abstract: The atomic magnetometer includes a light source device configured to output a linearly polarized irradiation light and a circularly polarized pump light, a first vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a first transmitted light, a second vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a second transmitted light, a magnetic field application device configured to apply a bias magnetic field in opposite directions to the first vapor cell and the second vapor cell, and a measuring device configured to obtain the magnetic field signal based on a differentiation of a first polarization rotation signal corresponding to a polarization state of the first transmitted light and a second polarization rotation signal corresponding to a polarization state of the second transmitted light.