scholarly journals Multi-focal laser fabrication of nitrogen vacancy centres in a bulk diamond

OSA Continuum ◽  
2020 ◽  
Vol 3 (12) ◽  
pp. 3416 ◽  
Author(s):  
Martina Barbiero ◽  
Stefania Castelletto ◽  
Min Gu
Keyword(s):  
Nitrogen Vacancy ◽  
Laser Fabrication ◽  
Bulk Diamond

scholarly journals Spin readout via spin-to-charge conversion in bulk diamond nitrogen-vacancy ensembles

2018 ◽  
Vol 113 (12) ◽  
pp. 122404 ◽  
Author(s):  
Harishankar Jayakumar ◽  
Siddharth Dhomkar ◽  
Jacob Henshaw ◽  
Carlos A. Meriles
Keyword(s):  
Nitrogen Vacancy ◽  
Bulk Diamond

scholarly journals Magnetometer with nitrogen-vacancy center in a bulk diamond for detecting magnetic nanoparticles in biomedical applications

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Akihiro Kuwahata ◽  
Takahiro Kitaizumi ◽  
Kota Saichi ◽  
Takumi Sato ◽  
Ryuji Igarashi ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Biomedical Applications ◽  
Nitrogen Vacancy ◽  
Nitrogen Vacancy Center ◽  
Bulk Diamond ◽  
Vacancy Center

scholarly journals Adjoint-optimized nanoscale light extractor for nitrogen-vacancy centers in diamond

Nanophotonics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 393-401
Author(s):  
Raymond A. Wambold ◽  
Zhaoning Yu ◽  
Yuzhe Xiao ◽  
Benjamin Bachman ◽  
Gabriel Jaffe ◽  
...  
Keyword(s):  
Time Domain ◽  
Silicon Layer ◽  
Optical Power ◽  
Nitrogen Vacancy ◽  
Diamond Surface ◽  
Far Field ◽  
Fabrication Errors ◽  
Nv Center ◽  
Nitrogen Vacancy Centers ◽  
Bulk Diamond

AbstractWe designed a nanoscale light extractor (NLE) for the efficient outcoupling and beaming of broadband light emitted by shallow, negatively charged nitrogen-vacancy (NV) centers in bulk diamond. The NLE consists of a patterned silicon layer on diamond and requires no etching of the diamond surface. Our design process is based on adjoint optimization using broadband time-domain simulations and yields structures that are inherently robust to positioning and fabrication errors. Our NLE functions like a transmission antenna for the NV center, enhancing the optical power extracted from an NV center positioned 10 nm below the diamond surface by a factor of more than 35, and beaming the light into a ±30° cone in the far field. This approach to light extraction can be readily adapted to other solid-state color centers.

scholarly journals Determining the internal quantum efficiency of shallow-implanted nitrogen-vacancy defects in bulk diamond

2016 ◽  
Vol 24 (24) ◽  
pp. 27715 ◽  
Author(s):  
Ilya P. Radko ◽  
Mads Boll ◽  
Niels M. Israelsen ◽  
Nicole Raatz ◽  
Jan Meijer ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Internal Quantum Efficiency ◽  
Nitrogen Vacancy ◽  
Vacancy Defects ◽  
Bulk Diamond

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.

scholarly journals Laser-Inscribed Diamond Waveguide Resonantly Coupled to Diamond Microsphere

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2698
Author(s):  
Nurperi Yavuz ◽  
Mustafa Mert Bayer ◽  
Hüseyin Ozan Ҫirkinoğlu ◽  
Ali Serpengüzel ◽  
Thien Le Phu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Polarized Light ◽  
Tunable Laser ◽  
Infrared Region ◽  
Nitrogen Vacancy ◽  
Quality Factors ◽  
High Quality ◽  
Near Surface ◽  
Optical Applications ◽  
Bulk Diamond

An all-diamond photonic circuit was implemented by integrating a diamond microsphere with a femtosecond-laser-written bulk diamond waveguide. The near surface waveguide was fabricated by exploiting the Type II fabrication method to achieve stress-induced waveguiding. Transverse electrically and transverse magnetically polarized light from a tunable laser operating in the near-infrared region was injected into the diamond waveguide, which when coupled to the diamond microsphere showed whispering-gallery modes with a spacing of 0.33 nm and high-quality factors of 105. By carefully engineering these high-quality factor resonances, and further exploiting the properties of existing nitrogen-vacancy centers in diamond microspheres and diamond waveguides in such configurations, it should be possible to realize filtering, sensing and nonlinear optical applications in integrated diamond photonics.

scholarly journals Ground-State Depletion Nanoscopy of Nitrogen-Vacancy Centres in Nanodiamonds

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Jelle Storterboom ◽  
Martina Barbiero ◽  
Stefania Castelletto ◽  
Min Gu
Keyword(s):  
Single Molecule ◽  
Ground State ◽  
Nitrogen Concentration ◽  
Super Resolution ◽  
Optical Power ◽  
Stimulated Emission ◽  
Nitrogen Vacancy ◽  
Resolution Imaging ◽  
Localisation Microscopy ◽  
Bulk Diamond

AbstractThe negatively charged nitrogen-vacancy ($${\text{NV}}^{ - }$$ NV - ) centre in nanodiamonds (NDs) has been recently studied for applications in cellular imaging due to its better photo-stability and biocompatibility if compared to other fluorophores. Super-resolution imaging achieving 20-nm resolution of $${\text{NV}}^{ - }$$ NV - in NDs has been proved over the years using sub-diffraction limited imaging approaches such as single molecule stochastic localisation microscopy and stimulated emission depletion microscopy. Here we show the first demonstration of ground-state depletion (GSD) nanoscopy of these centres in NDs using three beams, a probe beam, a depletion beam and a reset beam. The depletion beam at 638 nm forces the $${\text{NV}}^{ - }$$ NV - centres to the metastable dark state everywhere but in the local minimum, while a Gaussian beam at 594 nm probes the $${\text{NV}}^{ - }$$ NV - centres and a 488-nm reset beam is used to repopulate the excited state. Super-resolution imaging of a single $${\text{NV}}^{ - }$$ NV - centre with a full width at half maximum of 36 nm is demonstrated, and two adjacent $${\text{NV}}^{ - }$$ NV - centres separated by 72 nm are resolved. GSD microscopy is here applied to $${\text{NV}}^{ - }$$ NV - in NDs with a much lower optical power compared to bulk diamond. This work demonstrates the need to control the NDs nitrogen concentration to tailor their application in super-resolution imaging methods and paves the way for studies of $${\text{NV}}^{ - }$$ NV - in NDs’ nanoscale interactions.

scholarly journals Optical far-field super-resolution microscopy using nitrogen vacancy center ensemble in bulk diamond

2016 ◽  
Vol 109 (11) ◽  
pp. 111107 ◽  
Author(s):  
Shen Li ◽  
Xiang-dong Chen ◽  
Bo-Wen Zhao ◽  
Yang Dong ◽  
Chong-Wen Zou ◽  
...  
Keyword(s):  
Super Resolution ◽  
Nitrogen Vacancy ◽  
Far Field ◽  
Nitrogen Vacancy Center ◽  
Bulk Diamond ◽  
Super Resolution Microscopy ◽  
Vacancy Center
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