A compact two-dimensional quantum magnetometer module based on the fixed-frequency optical detection of magnetic resonance using nitrogen vacancy centers

2021 ◽  
Vol 119 (11) ◽  
pp. 114005
Author(s):  
Kun Huang ◽  
Yunlong Nie ◽  
Baixi Du ◽  
Jinlong Jiang ◽  
Zichuan Zhang ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Optical Detection ◽  
Nitrogen Vacancy ◽  
Two Dimensional ◽  
Fixed Frequency ◽  
Nitrogen Vacancy Centers ◽  
Quantum Magnetometer

Fiber-optic vectorial magnetic-field gradiometry by a spatiotemporal differential optical detection of magnetic resonance in nitrogen–vacancy centers in diamond

2016 ◽  
Vol 41 (9) ◽  
pp. 2057 ◽  
Author(s):  
S. M. Blakley ◽  
I. V. Fedotov ◽  
L. V. Amitonova ◽  
E. E. Serebryannikov ◽  
H. Perez ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Resonance ◽  
Fiber Optic ◽  
Optical Detection ◽  
Nitrogen Vacancy ◽  
Nitrogen Vacancy Centers

scholarly journals Broadband, large-area microwave antenna for optically detected magnetic resonance of nitrogen-vacancy centers in diamond

2016 ◽  
Vol 87 (5) ◽  
pp. 053904 ◽  
Author(s):  
Kento Sasaki ◽  
Yasuaki Monnai ◽  
Soya Saijo ◽  
Ryushiro Fujita ◽  
Hideyuki Watanabe ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Nitrogen Vacancy ◽  
Microwave Antenna ◽  
Large Area ◽  
Optically Detected Magnetic Resonance ◽  
Nitrogen Vacancy Centers ◽  
Optically Detected

scholarly journals Divergent effects of laser irradiation on ensembles of nitrogen-vacancy centers in bulk and nano-diamonds: implications for biosensing

2021 ◽  
Author(s):  
Domingo Olivares Postigo ◽  
Federico Gorrini ◽  
Valeria Bitonto ◽  
Johannes Ackermann ◽  
Rakshyakar Giri ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Laser Power ◽  
Surface Effects ◽  
Nitrogen Vacancy ◽  
Spin Order ◽  
Surface Areas ◽  
Nitrogen Vacancy Centers ◽  
Fluorescent Nanodiamonds ◽  
Optically Detected ◽  
Bulk Diamond

Ensembles of negatively charged nitrogen vacancy centers (NV-) in diamond have been proposed for sensing of magnetic fields and paramagnetic agents, and as a source of spin-order for the hyperpolarization of nuclei in magnetic resonance applications. To this end, strongly fluorescent nanodiamonds represent promising materials, with large surface areas and dense ensembles of NV-. However, surface effects tend to favor the less useful neutral form, the NV0 centers. Here, we study the fluorescence properties and optically detected magnetic resonance (ODMR) of NV- centers as a function of laser power in strongly fluorescent bulk diamond and in nanodiamonds obtained by nanomilling the native material. In bulk diamond, we find that increasing laser power increases ODMR contrast, consistent with a power-dependent increase in spin-polarization. Surprisingly, in nanodiamonds we observe a non-monotonic behavior, with a decrease in ODMR contrast at higher laser power that can be ascribed to more efficient NV-→NV0 photoconversion in nanodiamonds compared to bulk diamond, resulting in depletion of the NV- pool. We also studied this phenomenon in cell cultures following internalization of NDs in macrophages. Our findings show that surface effects in nanodiamonds substantially affect the NV properties and provide indications for the adjustment of experimental parameters.

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