Abstract
Published measurements of Faraday rotation in a variety of materials in pulsed magnetic fields show a time-dependent or hysteresis effect in which the angle of rotation lags the magnetic field as a function of time. We show that this effect is an artifact introduced by using a passive resistance-capacitance circuit to integrate the induced electromotive force (EMF) from a pickup coil to obtain the magnetic field. By numerically integrating the sampled-induced EMF signal, the effect vanishes. However, we propose an experimental situation where such a time lag should appear, allowing measurement of the spin-lattice relaxation time of the ion responsible for the Faraday rotation.
© 1985 Optical Society of America
Full Article | PDF ArticleMore Like This
Jeffrey A. Davis and Robert M. Bunch
Appl. Opt. 23(4) 633-636 (1984)
Heihachi Sato, Masatoshi Kawase, and Mitsunori Saito
Appl. Opt. 24(15) 2300-2303 (1985)
William S. C. Chang and James Q. Burgess
Appl. Opt. 1(3) 329-333 (1962)