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arXiv · 1003.3526

High sensitivity magnetic imaging using an array of spins in diamond

Steffen Steinert·Florian Dolde·Philipp Neumann·Andrew Aird·Boris Naydenov·Gopalakrishnan Balasubramanian·Fedor Jelezko·Joerg Wrachtrup
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Abstract

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 $μ$m 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/$\sqrt{Hz}$ and vector reconstruction, an unprecedented spatio-temporal resolution and functionality at room temperature.

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Steffen Steinert, Florian Dolde, Philipp Neumann, Andrew Aird, Boris Naydenov, Gopalakrishnan Balasubramanian, Fedor Jelezko, Joerg Wrachtrup. 2010-03-18. High sensitivity magnetic imaging using an array of spins in diamond. https://doi.org/10.1063/1.3385689

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