A magnetometer using optically active defects in a solid state material

Alexander Huck (Inventor), Sepehr Ahmadi (Inventor), Haitham El-Ella (Inventor), Ulrik Lund Andersen (Inventor)

Research output: Patent

191 Downloads (Pure)

Abstract

The present invention relates to a magnetometer (100) using optically detected magnetic resonance (ODMR), where a solid state material (10), such as diamond, with an ensemble of paramagnetic defects, such as nitrogen vacancies centers NV, is applied. An optical cavity (20) is optically excited by an irradiation laser (25) arranged therefore. A coupling structure (30) causes a microwave excitation (Ω) of the paramagnetic defects, and a permanent magnetic field (40, B_C) causes a Zeeman splitting of the energy levels in the paramagnetic defects. A probing volume (PV) in the solid state material is thereby defined by the spatially overlapping volume of the optical excitation by the irradiation laser (25), the coupling structure (30) also exciting the defects, and the constant magnetic field. The magnetometer then measures an unknown magnetic field by detecting emission (27), e.g. fluorescence, from the defects in the probing volume (PV) from the double excitation of the defects by the irradiation laser, and the coupling structure exciting these defects.
Original languageEnglish
IPCG01R33/323
Patent numberWO2019002576
Filing date03/01/2019
CountryInternational Bureau of the World Intellectual Property Organization (WIPO)
Priority date29/06/2017
Priority numberEP20170178726
Publication statusPublished - 2019

Cite this

Huck, A., Ahmadi, S., El-Ella, H., & Andersen, U. L. (2019). IPC No. G01R33/323 . A magnetometer using optically active defects in a solid state material. (Patent No. WO2019002576).
Huck, Alexander (Inventor) ; Ahmadi, Sepehr (Inventor) ; El-Ella, Haitham (Inventor) ; Andersen, Ulrik Lund (Inventor). / A magnetometer using optically active defects in a solid state material. IPC No.: G01R33/323 . Patent No.: WO2019002576. Jan 03, 2019.
@misc{56dea341876c4da08a43e3b0f723f3b5,
title = "A magnetometer using optically active defects in a solid state material",
abstract = "The present invention relates to a magnetometer (100) using optically detected magnetic resonance (ODMR), where a solid state material (10), such as diamond, with an ensemble of paramagnetic defects, such as nitrogen vacancies centers NV, is applied. An optical cavity (20) is optically excited by an irradiation laser (25) arranged therefore. A coupling structure (30) causes a microwave excitation (Ω) of the paramagnetic defects, and a permanent magnetic field (40, B_C) causes a Zeeman splitting of the energy levels in the paramagnetic defects. A probing volume (PV) in the solid state material is thereby defined by the spatially overlapping volume of the optical excitation by the irradiation laser (25), the coupling structure (30) also exciting the defects, and the constant magnetic field. The magnetometer then measures an unknown magnetic field by detecting emission (27), e.g. fluorescence, from the defects in the probing volume (PV) from the double excitation of the defects by the irradiation laser, and the coupling structure exciting these defects.",
author = "Alexander Huck and Sepehr Ahmadi and Haitham El-Ella and Andersen, {Ulrik Lund}",
year = "2019",
language = "English",
type = "Patent",
note = "WO2019002576; G01R33/323",

}

Huck, A, Ahmadi, S, El-Ella, H & Andersen, UL Jan. 03 2019, A magnetometer using optically active defects in a solid state material, Patent No. WO2019002576, IPC No. G01R33/323 .

A magnetometer using optically active defects in a solid state material. / Huck, Alexander (Inventor); Ahmadi, Sepehr (Inventor); El-Ella, Haitham (Inventor); Andersen, Ulrik Lund (Inventor).

IPC No.: G01R33/323 . Patent No.: WO2019002576. Jan 03, 2019.

Research output: Patent

TY - PAT

T1 - A magnetometer using optically active defects in a solid state material

AU - Huck, Alexander

AU - Ahmadi, Sepehr

AU - El-Ella, Haitham

AU - Andersen, Ulrik Lund

PY - 2019

Y1 - 2019

N2 - The present invention relates to a magnetometer (100) using optically detected magnetic resonance (ODMR), where a solid state material (10), such as diamond, with an ensemble of paramagnetic defects, such as nitrogen vacancies centers NV, is applied. An optical cavity (20) is optically excited by an irradiation laser (25) arranged therefore. A coupling structure (30) causes a microwave excitation (Ω) of the paramagnetic defects, and a permanent magnetic field (40, B_C) causes a Zeeman splitting of the energy levels in the paramagnetic defects. A probing volume (PV) in the solid state material is thereby defined by the spatially overlapping volume of the optical excitation by the irradiation laser (25), the coupling structure (30) also exciting the defects, and the constant magnetic field. The magnetometer then measures an unknown magnetic field by detecting emission (27), e.g. fluorescence, from the defects in the probing volume (PV) from the double excitation of the defects by the irradiation laser, and the coupling structure exciting these defects.

AB - The present invention relates to a magnetometer (100) using optically detected magnetic resonance (ODMR), where a solid state material (10), such as diamond, with an ensemble of paramagnetic defects, such as nitrogen vacancies centers NV, is applied. An optical cavity (20) is optically excited by an irradiation laser (25) arranged therefore. A coupling structure (30) causes a microwave excitation (Ω) of the paramagnetic defects, and a permanent magnetic field (40, B_C) causes a Zeeman splitting of the energy levels in the paramagnetic defects. A probing volume (PV) in the solid state material is thereby defined by the spatially overlapping volume of the optical excitation by the irradiation laser (25), the coupling structure (30) also exciting the defects, and the constant magnetic field. The magnetometer then measures an unknown magnetic field by detecting emission (27), e.g. fluorescence, from the defects in the probing volume (PV) from the double excitation of the defects by the irradiation laser, and the coupling structure exciting these defects.

M3 - Patent

M1 - WO2019002576

Y2 - 2019/01/03

ER -