Optical lever for monitoring of the magic angle

Setting the magic angle and accurately maintaining it over a full range of experimental conditions can be a frustrating experience. We present a simple optical device for immediate indication of the stator angle, free of mechanical uncertainties present in typical adjustment mechanisms.

78Highlights► An optical lever is presented that provides easy monitoring of the magic angle. ► The optical lever makes it easier to set the magic angle. ► Use of inexpensive lasers provides a check on probe orientation in the magnet.