High sensitivity magnetic imaging using an array of spins in diamond

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. O...

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Bibliographic Details
Published in:arXiv.org 2010-03
Main Authors: Steinert, Steffen, Dolde, Florian, Neumann, Philipp, Aird, Andrew, Naydenov, Boris, Gopalakrishnan Balasubramanian, Jelezko, Fedor, Wrachtrup, Joerg
Format: Article
Language:English
Subjects:
Arrays
CCD cameras
Diamonds
Field of view
Imaging
Magnetic fields
Magnetic resonance
Sensitivity
Temporal resolution
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Summary: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 \(\mu\)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.
ISSN:2331-8422
DOI:10.48550/arxiv.1003.3526