Method and apparatus for performing magnetic field measurements

Details Method and apparatus for performing magnetic field measurements Method and apparatus for performing magnetic field measurements

1995-06-07

1997-05-20

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Magnetometers

324175, G01R 33032, G01P 336

Patent

active

056315597

ABSTRACT:
A sensor system includes a magneto-optic Kerr effect magnetic field sensing element and an optical system including a light source, at least one polarizer or polarizing element and a detector disposed about the sensing element. The sensing element is responsive to an external magnetic field. In one embodiment, the optical system and sensing element can be arranged to measure the strength of a magnetic field. In another embodiment the optical system and sensing element can be arranged to measure the rotational speed of rotating members.

REFERENCES:
patent: 3609723 (1971-09-01), Alstad et al.
patent: 3971038 (1976-07-01), Myer
patent: 4059829 (1977-11-01), Kinsmer et al.
patent: 4079429 (1978-03-01), Travot et al.
patent: 4365310 (1982-12-01), Green
patent: 4442350 (1984-04-01), Rashleigh
patent: 4450406 (1984-05-01), Bobb
patent: 4482400 (1984-11-01), O'Handley
patent: 4491867 (1985-01-01), Huignard
patent: 4516073 (1985-05-01), Doriath et al.
patent: 4563646 (1986-01-01), Desormiere
patent: 4564289 (1986-01-01), Spillman, Jr.
patent: 4604577 (1986-08-01), Matsumura et al.
patent: 4609871 (1986-09-01), Bobb
patent: 4618901 (1986-10-01), Hatakeyama et al.
patent: 4627298 (1986-12-01), Sahashi et al.
patent: 4634977 (1987-01-01), Lenz et al.
patent: 4658148 (1987-04-01), Naito
patent: 4742300 (1988-05-01), Lenz et al.
patent: 4746791 (1988-05-01), Forkel
patent: 4762008 (1988-08-01), Kobayashi et al.
patent: 4782705 (1988-11-01), Hoffman et al.
patent: 4806858 (1989-02-01), Elbicki
patent: 4816761 (1989-03-01), Josephs
patent: 4866381 (1989-09-01), Tatsuhiko
patent: 4896103 (1990-01-01), Shimanuke et al.
patent: 4920806 (1990-05-01), Obama et al.
patent: 4922200 (1990-05-01), Jackson et al.
patent: 4925742 (1990-05-01), Sugawara et al.
patent: 4931634 (1990-06-01), Toyama
patent: 4939937 (1990-07-01), Klauber et al.
patent: 4947107 (1990-08-01), Doerfler et al.
patent: 4969720 (1990-11-01), Lins et al.
patent: 5031236 (1991-07-01), Hodgkinson et al.
patent: 5034679 (1991-07-01), Henderson et al.
patent: 5038102 (1991-08-01), Glasheen
patent: 5110376 (1992-05-01), Kobayashi et al.
patent: 5113131 (1992-05-01), Cooper et al.
patent: 5116693 (1992-05-01), Liu et al.
patent: 5142227 (1992-08-01), Fish
patent: 5144846 (1992-09-01), Klauber et al.
patent: 5146790 (1992-09-01), Fish
patent: 5150350 (1992-09-01), Aikoh et al.
patent: 5173885 (1992-12-01), Iiyorie et al.
patent: 5202629 (1993-04-01), Seike et al.
patent: 5214377 (1993-05-01), Maurice et al.
patent: 5475489 (1995-12-01), Gottsche
patent: 5483161 (1996-01-01), Deeter et al.
Bushnell, S.E. et al., The Measurement of Magnetostriction Constants of Thin Films Using Planar Microwave Devices and Ferromagnetic Resonance, Rev. Sci. Instrum. 63(3):2021, Mar. 1992, pp. 2021-2025.
Minden, H.T., Sensitive Method for the Measurement of the Kerr Magneto-Optic Effect, Rev. Sci. Instrum. 63(2): 1798, Feb. pp. 1798-1804.
Nader-Rezvani, N. et al., Low Frequency Fiber Optic Magnetic Field Sensors, Optical Engineering 31 (1):23, Jan. 1992, pp. 23-27.
Florczak, J.M., et al., Detecting Two Magnetization Components by the Magneto-Optical Kerr Effect, J. Appl. Phys. 67(12):7520, 15 Jun. 1990, pp. 7520-7524.
Oliver, S. A. et al., Magnetostriction Measurements on Thin Films By A Slot-Line Ferromagnetic Resonance Technique, J. Appl. Physics 67, 5019 (1990) 1 page.
Bucholtz, F. et al., Recent Developments in Fiber Optic Magnetostrictive Sensors, SPIE vol. 1367 Fiber Optic and Laser Sensors VIII, p. 226 (1990) pp. 226-235.
Moog, E. R. et al., Thickness and Polarization Dependence of the Magnetooptic Signal from Ultrathin Ferromagnetic Films, vol. 39, No. 10, 1 Apr., 1989, pp. 6949-6956.
Prinz, G.A., et al., Order-Disorder Effects in the Magneto-Optical Properties of Evaporated Fe-Co Alloy Films, IEEE Transactions on Magnetics, vol. Mag-17, No. 6, Nov. 1981, pp. 3232-3234.
Krebs, J. J. et al., Applications of Magneto-Optics in Ring Laser Gyroscopes, IEEE Transactions on Magnetics, vol. Mag-16, No. 5, Sep. 1980, pp. 1179-1184.
Freiser, Marvin J., A Survey of Magnetooptic Effects, IEEE Transactions on Magnetics, vol. Mag-4 No. 1, Jun. 1968 pp. 152-161.
Oliver, S. A. et al., Research in Microwave and Magneto-Optic Materials, Nov. 1991, Industrial Advisory Report to CER Members.
McKnight, S.W. et al., Research in Microwave Materials, May 1991 Industrial Advisory Board.
Oliver, S.A. et al., Research in Microwave Materials, Nov. 1990 Industrial Advisory Board Report.
McKnight, S. W. et al., Magneto-Optical Kerr Effect in Soft Magnetic Films For Optical Sensor Applications, Proposal to Charles Stark Draper Laboratories, Mar. 10, 1990 pp. 1-7.
Moslehi, B et al., Optical Magnetic and Electronic Field Sensors Based On Surface Plasmon Polariton Resonant Coupling, Mar. 25, 1991.
Vijai Kumar Agrawal, et al, Waveguide Type Optical Modulator Using Kerr Magnetooptic Effects in Ni-Fe Thin Films; Experimental Study Japanese Journal of Applied Physics, vol. 14, No. 9, Sep., 1975, pp. 1313-1322.
V. K. Agrawal, et al, Analysis of Hybrid Modes in an Optical Waveguide Gounded at One Side by A Gyromagnetic Medium, Optics Communication, vol. 16, No. 1, Jan., 1976, pp. 104-109.
Mark E. Re, et al, Magneto-Optic Determination of Magnetic Recording Head Fields, IEEE Transactions on Magnetics, vol. Mag-22, No. 5, Sep., 1986, pp. 840-842.
C. S. Guderman, D.E., et al, "Easy Axis Orientation Mapping of Soft Magnetic Films Using a Magnetic-Optic Kerr BII Imager," IEEE Transactions on Magnetics, vol. 25, No. 5, Sep., 1989, pp. 4207-4209.
K. Abe, et al. HC Measurement of Microscopic Regions on Thin Film Magnetic Disc Using Longitudinal Kerr Effect, IEEE Transactions on Magnetics, vol. 25, No. 5 Sep., 1989, pp. 4210-4212.
Steven A. Oliver, et al., Magnetic Field Measurements Using Magneto-optic Kerr Effect Sensors, Optical Engineering, Nov. 1994, vol. 33 No. 11, pp. 3718-3722.
S. A. Oliver, et al., Measurement of Magnetic Fields Using the Magnetooptic Kerr Effect, Applied Physics Letter 63(3) Jul. 19, 1993, pp. 415-417.
Richard LAO, Space Electronics, Inc., A New Wrinkle in Magnetoresistive Sensors, Sensors Oct., 1994 pp. 63-65.
S. A. Oliver, et al. Magnetic Kerr Effect Sensors for Fiber Optic Applications, SPIE vol. 2070 Fiber Optic and Laser Sensors XI(1993) pp. 429-437.

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