A Sensitive Magnetometer

Sensitive optical atomic magnetometer based on nonlinear magneto-optical rotation

A self-oscillating magnetometer based on nonlinear magneto-optical rotation using amplitude-modulated pump light and unmodulated probe light (AM-NMOR) in Rb has been constructed and tested towards a goal of airborne detection of 87 magnetic anomalies. In AM-NMOR, stroboscopic optical pumping via amplitude modulation of the pump beam creates alignment of the ground electronic state of the rubidi...

Ultra-sensitive Magnetic Microscopy with an Optically Pumped Magnetometer

Optically pumped magnetometers (OPMs) based on lasers and alkali-metal vapor cells are currently the most sensitive non-cryogenic magnetic field sensors. Many applications in neuroscience and other fields require high-resolution, high-sensitivity magnetic microscopic measurements. In order to meet this demand we combined a cm-size spin-exchange relaxation-free (SERF) OPM and flux guides (FGs) t...

A sensitive and versatile torque magnetometer for use in high magnetic fields

A sensitive and accurate atomic magnetometer based on free spin precession

We present a laser-based atomic magnetometer that allows inferring the modulus of a magnetic field from the free Larmor precession of spin-oriented Cs vapour atoms. The detection of free spin precession (FSP) is not subject to systematic readout errors that occur in phase feedback-controlled magnetometers in which the spin precession is actively driven by an oscillating field or a modulation of...

New Magnetometer

We summarize here the main practical results obtained in the Institute of Electronics at the Bulgarian Academy of Sciences under the project: “New alloptical systems and methods for magnetic and electromagnetic field measurement”, financed by EC (contract G6RD-CT-2001-00642). The project Consortium consists of the following partners: Department of Physics, University of Siena, Italy, Project Co...