Magnetic field sensors using Ce:YIG single crystals as a Faraday element

Author

Kamada, Osamu ; Higuchi, Sadao

Author_Institution

Dept. of Electron. Eng., Polytech.. Univ., Kanagawa, Japan

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2013

Lastpage

2015

Abstract

Magnetic field sensors based on creation of the Faraday effect by rotation magnetization in Ce:YIG crystals are studied. The large linear magnetic birefringence (LMB) of Δn=-1.7×10^-4 was observed in the Ce_0.18Y_2.82Fe₅O₁₂ crystal and it was found from both the calculation and experimental investigations that the LMB affects the linearity of the sensor output. The validity of the method of utilizing a pair of Ce:YIG crystals with an azimuthal angle of 90 deg in the optical axis is demonstrated as a method of improving these phenomena

Keywords

Faraday effect; cerium; garnets; magnetic field measurement; magneto-optical sensors; yttrium compounds; Ce_0.18Y_2.82Fe₅O₁₂; Cotton-Mouton effect; Faraday effect; Jones matrix; YFe5O12:Ce; YIG:Ce; angular dependence; compensation effect; doped garnet single crystals; large linear magnetic birefringence; magnetic field sensors; rotation magnetization; sensor output linearity; Azimuthal angle; Birefringence; Crystals; Faraday effect; Iron; Linearity; Magnetic sensors; Magnetization; Optical sensors; Sensor phenomena and characterization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951038

Filename

951038