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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 1009–1011

Study of nanosecond pulsed magnetic fields using temporally resolved Faraday rotation through a magneto-optical waveguide

Wasif Syed, David A. Hammer, and Michal Lipson  »View Author Affiliations

Optics Letters, Vol. 34, Issue 7, pp. 1009-1011 (2009)

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We have measured magnetic fields up to 17.7 T with a rise time of 75 ns using temporally resolved Faraday rotation of a single longitudinal mode laser beam through a magneto-optically active bulk waveguide. We believe this to be the first time that such large, rapidly varying magnetic fields have been measured with this class of materials (multicomponent terbium borate glass). As there was no measurable lag between the magnetic field inferred from the angle of rotation of the laser beam and the electromagnetically measured field, our sample of terbium borate glass has a spin-lattice relaxation time of a few tens of nanoseconds at most at approximately room temperature ( 300 K ) . The highest peak magnetic fields were measured in wire-array Z-pinch experiments on a 0.5 MA pulsed power machine.

© 2009 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(140.3570) Lasers and laser optics : Lasers, single-mode
(160.3820) Materials : Magneto-optical materials
(230.2240) Optical devices : Faraday effect
(260.2110) Physical optics : Electromagnetic optics
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Fourier Optics and Optical Processing

Original Manuscript: December 8, 2008
Revised Manuscript: February 10, 2009
Manuscript Accepted: February 11, 2009
Published: March 23, 2009

Wasif Syed, David A. Hammer, and Michal Lipson, "Study of nanosecond pulsed magnetic fields using temporally resolved Faraday rotation through a magneto-optical waveguide," Opt. Lett. 34, 1009-1011 (2009)

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