Near-infrared-enhanced charge state conversion for low power optical nanoscopy with nitrogen vacancy center in diamond

Abstract

The near-infrared (NIR) optical pumped photophysics of nitrogen vacancy (NV) center in diamond was experimentally studied by considering both the charge state conversion and stimulated emission. We found that the NIR laser can help to highly enhance the charge state conversion rate, which can be applied to improve the performance of charge state depletion nanoscopy. Using a doughnut-shaped visible laser beam and a Gaussian-shaped NIR laser beam for charge state manipulation, we developed a low power charge state depletion nanoscopy for NV center. A spatial resolution of 14 nm was achieved with the depletion laser intensity approximately three orders lower than that used for the stimulated emission depletion nanoscopy with NV center. With high spatial resolution and low laser power, the nanoscopy can be used for nanoscale quantum sensing with NV center. And our study on the charge state conversion can help to further optimize the NV center spin state initialization and detection.

arXiv comment8 pages, 5 figures

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Cited by in corpus (9)

• Sensitivity Optimization for NV-Diamond Magnetometry
• Diamond surface engineering for molecular sensing with nitrogen-vacancy centers
• Microscopic imaging of elastic deformation in diamond via in-situ stress tensor sensors
• Charge State Dynamics During Excitation and Depletion of the Nitrogen Vacancy Center in Diamond
• All-optical cryogenic thermometry based on NV centers in nanodiamonds
• Super-resolution diamond magnetic microscopy of superparamagnetic nanoparticles
• High contrast quantum imaging with time-gated fluorescence detection
• Widefield quantum microscopy with nitrogen-vacancy centers in diamond: strengths, limitations, and prospects
• High resolution imaging with anomalous saturated excitation