| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical magnetic field sensor having high sensitivity even in a heavy-current region, that is, in a region having high magnetic field intensity, and capable of sensing light even by using light having a wavelength in a visible light range such as 500-650 nm. SOLUTION: This optical magnetic field sensor is provided with: a Faraday rotator formed of a paramagnetic material; a polarizer; an analyzer; a light emitting means; and a light sensing means. The optical magnetic field sensor is characterized by that the Faraday rotator formed of the paramagnetic material is formed of a paramagnetic garnet single crystal containing at least Tb and Al. COPYRIGHT: (C)2004,JPO
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