Two Pb glasses with a Pb Wt. % of 66.3, 34.7 is used to investigate a Faraday rotation effect with 5000V charging voltage. Then the polarization direction is rotated in proportional to magnetic field and length of specimen when magnetic field is induced by discharging a 2μF condenser through a trigger spark gap.
The rotation angle of 50˚, 28˚ are obtained for the two Pb glasses specimen 4.35cm and 2.78cm respectively.
These specimens are found to have a absorption coefficient 0.11/cm, 0.07/cm respectively for Hg 5461Å.
One way shutter is designed using two Faraday rotators without optical activity component.
The Faraday rotators are required 90˚ and 45˚ rotation for each component so that the required total length of the Pb glass, used in the present experiment, are 24.40cm, 28.70cm respectively which gives absorption of 93.2% and 86.6%.
These absorptions are prohibitive and the use of superior Faraday rotator materials such as Schott SFS-6 or TbAIG (Terbium Aluminum Garnet), $As_2O_3$ are inevitable.
