Abstract
Electromagnetic interference (EMI) is a serious problem in integrated circuits (ICs). Many methods for measuring EMI have been developed. These methods generally use metal probes to measure electromagnetic waves; however, metal probes alter the electromagnetic field. Furthermore, measurement techniques that have very high time resolutions are required because of the high operating frequencies of ICs. Measurements that use the magneto-optical effect can overcome both these problems. Magneto-optical materials affect electromagnetic waves less than metal probes and optical measurements are advantageous for minimally invasive measurements of magnetic fields. To achieve a high resolution, we developed a stroboscopic method that employs short laser pulses. This method can measure a magnetic field in any phase because the laser pulses are synchronized with the magnetic field. Measurements of magnetic-field waveforms demonstrated that this stroboscopic method is effective for measuring magnetic-field waveforms.
Original language | English |
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Article number | 6028106 |
Pages (from-to) | 4011-4013 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 47 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2011 Oct 1 |
Keywords
- Electromagnetic compatibility
- magnetic-field measurement
- magneto-optical effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering