| 摘要 |
PROBLEM TO BE SOLVED: To achieve a high-frequency magnetic field measuring device capable of detecting selective frequency components by imparting frequency selectivity to the magnetic field sensor head. SOLUTION: A high-frequency magnetic field sensor head using the Faraday effect may show a frequency selectivity to a high frequency magnetic field or may have static or quasi-static magnetic field dependency. The measurement device for measuring the magnetic field intensity using the Faraday effect represented by the magneto-optical crystal comprises a magneto-optical crystal arranged in the high-frequency magnetic field, a polarization observation means for observing the rotational angle of polarization surface of the irradiated light, an auxiliary magnetic field generation means for impressing DC or low-frequency auxiliary magnetic field capable of changing a frequency selectivity of the magnetic crystal, and a display means for displaying the output of the polarization observation means as a function of an intensity of the auxiliary magnetic field or a direction. COPYRIGHT: (C)2007,JPO&INPIT
|
