| 摘要 |
PROBLEM TO BE SOLVED: To provide a scanning magnetic microscope improved in detecting sensitivity by enhancing the efficiency of detecting the magnetic field generated from a measured object, and the change of the magnetic field, and a noise eliminating function. SOLUTION: A laser light source 7 is disposed on the side of a pickup coil 3 to the measured object 4, and transparent windows WA, WB, WC, WD are fitted into vacuum heat-insulating walls 1, 2. Irradiated laser beams L pass through a hollow part of the pickup coil 3 serving as a detecting part of a magnetic detector, to irradiate the surface of the measured object 4. The local magnetic field of the measured object 4 excited by the surface of the measured object, and the change of the magnetic field can thereby be efficiently detected by the pickup coil 3.
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