title: A full optically operated magnetometer array: an experimental study.
abstract: We show the operation of an optically pumped magnetometer array in a 50 μT magnetic field. The various components for a fully optical and non-magnetic detector unit were constructed and evaluated, from which a prototype unit was assembled with fiber coupled electronics. In this unit the magnetometers were operated using the intensity modulated method and heated with an off-resonant laser. Calculations on the temperature distribution were used to design the magnetometer array. Different magnetometers in such a detector unit were characterized and showed identical performance. Without applying noise reduction schemes, the obtained magnetic field resolution is a factor 2.5 above the shot noise level down to frequencies of about 7 Hz.
authors.affiliation: Institute of Photonic Technology, Albert-Einstein-Str. 9, D-07745 Jena, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Ijsselsteijn
authors.forename: M
authors.initials: M
authors.lastname: Kielpinski
authors.forename: S
authors.initials: S
authors.lastname: Woetzel
authors.forename: T
authors.initials: T
authors.lastname: Scholtes
authors.forename: E
authors.initials: E
authors.lastname: Kessler
authors.forename: R
authors.initials: R
authors.lastname: Stolz
authors.forename: V
authors.initials: V
authors.lastname: Schultze
authors.forename: H-G
authors.initials: HG
authors.lastname: Meyer