title: Measurements of magnetic fields by a ring laser.
abstract: The principle of measuring magnetic fields with a ring laser system is discussed. The main source of error, the Zeeman effect, is studied, and a corresponding technique to reduce it is described. An experimental setup is developed with a Faraday cell of a large product of the Verdet constant and the length. The experimental device obtains a sensitivity of 0.5 nT and a stability of 2 nT.
authors: J
authors: J
authors: Zhang
authors: T
authors: T
authors: Feng
authors: S
authors: S
authors: Zhang
authors: G
authors: G
authors: Jin