2010/03/18 by Steffen Steinert, Florian Dolde, Philipp Neumann +5 · 1 citation
Physics and Astronomy · #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.3385689
published as Rev. Sci. Instrum. 81, 043705 (2010)
arxiv created 2010/03/18 · arxiv updated 2010/05/04
We present a solid state magnetic field imaging technique using a two dimensional array of spins in diamond. The magnetic sensing spin array is made of nitrogen-vacancy (NV) centers created at shallow depths. Their optical response is used for measuring external magnetic fields in close proximity. Optically detected magnetic resonance (ODMR) is readout from a 60x60 μm field of view in a multiplexed manner using a CCD camera. We experimentally demonstrate full two-dimensional vector imaging of the magnetic field produced by a pair of current carrying micro-wires. The presented widefield NV magnetometer offers in addition to its high magnetic sensitivity of 20 nT/√(Hz) and vector reconstruction, an unprecedented spatio-temporal resolution and functionality at room temperature.