Optical detection of AC magnetic field by using alkali metal atoms

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K18113
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Measurement engineering
• Research Institution: Okayama University
• Principal Investigator: Taue Shuji 岡山大学, 自然科学研究科, 助教 (80420503)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 磁界分布 / 磁界計測 / 光学測定

Outline of Final Research Achievements

We utilized an optical magnetometer to detect AC magnetic field. At first, small permanent magnets were used instead of big coils to generate static magnetic field around the sensor head. Non-uniform magnetic field from permanent magnets produced reduction of output signals and a higher bandwidth.
Subsequently, we achieved to visualize magnetic field distributions with sub-millimeter resolutions by using a mirror array device. Uniform field distributions from Helmholtz coils and field decays from a fine wire were clearly obtained.

Free Research Field

光計測