Nanotesla sensitivity magnetic field sensing using a compact diamond nitrogen-vacancy magnetometer

James Luke Webb, Joshua David Clement, Luca Troise, Sepehr Ahmadi, Gustav Juhl Johansen, Alexander Huck*, Ulrik Lund Andersen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Solid state sensors utilizing diamond nitrogen-vacancy (NV) centers are a promising sensing platform that can provide high sensitivity and spatial resolution at high precision. Such sensors have been realized in bulky laboratory-based forms; however, practical applications demand a miniaturized, portable sensor that can function in a wide range of environmental conditions. Here, we demonstrate such a diamond NV magnetic field sensor. The sensor head fits inside a 11×7×7 cm3 3D-printed box and exhibits sub-10 nT/Hz sensitivity over a 125 Hz bandwidth. We achieve efficient fluorescence collection using an optical filter and diode in contact with the diamond, which is cut at the Brewster angle to maximize the coupling of 532 nm pump light. We discuss the potential of this flexible approach to achieve sub-nT/Hz shot noise limited sensitivity suitable for detection of a wide range of low-level magnetic fields, particularly those from electrical power systems and from biological sources.
Original languageEnglish
JournalApplied Physics Letters
Volume114
Issue number23
Number of pages5
ISSN0003-6951
DOIs
Publication statusPublished - 2019

Cite this

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title = "Nanotesla sensitivity magnetic field sensing using a compact diamond nitrogen-vacancy magnetometer",
abstract = "Solid state sensors utilizing diamond nitrogen-vacancy (NV) centers are a promising sensing platform that can provide high sensitivity and spatial resolution at high precision. Such sensors have been realized in bulky laboratory-based forms; however, practical applications demand a miniaturized, portable sensor that can function in a wide range of environmental conditions. Here, we demonstrate such a diamond NV magnetic field sensor. The sensor head fits inside a 11×7×7 cm3 3D-printed box and exhibits sub-10 nT/Hz sensitivity over a 125 Hz bandwidth. We achieve efficient fluorescence collection using an optical filter and diode in contact with the diamond, which is cut at the Brewster angle to maximize the coupling of 532 nm pump light. We discuss the potential of this flexible approach to achieve sub-nT/Hz shot noise limited sensitivity suitable for detection of a wide range of low-level magnetic fields, particularly those from electrical power systems and from biological sources.",
author = "Webb, {James Luke} and Clement, {Joshua David} and Luca Troise and Sepehr Ahmadi and Johansen, {Gustav Juhl} and Alexander Huck and Andersen, {Ulrik Lund}",
year = "2019",
doi = "10.1063/1.5095241",
language = "English",
volume = "114",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
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Nanotesla sensitivity magnetic field sensing using a compact diamond nitrogen-vacancy magnetometer. / Webb, James Luke; Clement, Joshua David; Troise, Luca; Ahmadi, Sepehr; Johansen, Gustav Juhl; Huck, Alexander; Andersen, Ulrik Lund.

In: Applied Physics Letters, Vol. 114, No. 23, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Nanotesla sensitivity magnetic field sensing using a compact diamond nitrogen-vacancy magnetometer

AU - Webb, James Luke

AU - Clement, Joshua David

AU - Troise, Luca

AU - Ahmadi, Sepehr

AU - Johansen, Gustav Juhl

AU - Huck, Alexander

AU - Andersen, Ulrik Lund

PY - 2019

Y1 - 2019

N2 - Solid state sensors utilizing diamond nitrogen-vacancy (NV) centers are a promising sensing platform that can provide high sensitivity and spatial resolution at high precision. Such sensors have been realized in bulky laboratory-based forms; however, practical applications demand a miniaturized, portable sensor that can function in a wide range of environmental conditions. Here, we demonstrate such a diamond NV magnetic field sensor. The sensor head fits inside a 11×7×7 cm3 3D-printed box and exhibits sub-10 nT/Hz sensitivity over a 125 Hz bandwidth. We achieve efficient fluorescence collection using an optical filter and diode in contact with the diamond, which is cut at the Brewster angle to maximize the coupling of 532 nm pump light. We discuss the potential of this flexible approach to achieve sub-nT/Hz shot noise limited sensitivity suitable for detection of a wide range of low-level magnetic fields, particularly those from electrical power systems and from biological sources.

AB - Solid state sensors utilizing diamond nitrogen-vacancy (NV) centers are a promising sensing platform that can provide high sensitivity and spatial resolution at high precision. Such sensors have been realized in bulky laboratory-based forms; however, practical applications demand a miniaturized, portable sensor that can function in a wide range of environmental conditions. Here, we demonstrate such a diamond NV magnetic field sensor. The sensor head fits inside a 11×7×7 cm3 3D-printed box and exhibits sub-10 nT/Hz sensitivity over a 125 Hz bandwidth. We achieve efficient fluorescence collection using an optical filter and diode in contact with the diamond, which is cut at the Brewster angle to maximize the coupling of 532 nm pump light. We discuss the potential of this flexible approach to achieve sub-nT/Hz shot noise limited sensitivity suitable for detection of a wide range of low-level magnetic fields, particularly those from electrical power systems and from biological sources.

U2 - 10.1063/1.5095241

DO - 10.1063/1.5095241

M3 - Journal article

VL - 114

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

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ER -