We present new methods for increasing the magnitude and uniformity of rotation of a Faraday rotator with a large clear aperture. We show theoretically and experimentally that the amount of rotation and the uniformity of rotation across the aperture can be simultaneously increasel by introducing a small separation between adjacent, oppositely oriented magnets. Furthermore we show that the uniformity can be increased by displacing the rod of rotator glass longitudinally from the centred position. We have constructed such a device and obtained an isolation ratio of 45 dB at 1.06 um.
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