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arXiv:2307.14990 · ACS Photonics

Super-Resolution Enabled Widefield Quantum Diamond Microscopy

Feng Xu, Jialong Chen, Yong Tian Hou, Juan Cheng, Tony K. C. Hui, Shih‐Chi Chen, Zhiqin Chu

Published Dec 28, 2023• 8 citations
arXivHTMLPDF

Abstract

Widefield quantum diamond microscopy (WQDM) based on Kohler illumination has been widely adopted in the field of quantum sensing; however, practical applications are still limited by issues such as unavoidable photodamage and unsatisfied spatial-resolution. Here, we design and develop a super-resolution-enabled WQDM using a digital micromirror device (DMD)-based structured illumination microscope. With the rapidly programmable illumination patterns, we have first demonstrated how to mitigate phototoxicity when imaging nanodiamonds in cell samples. As a showcase, we have performed the super-resolved quantum sensing measurements of two individual nanodiamonds not even distinguishable with conventional WQDM. The DMD-powered WQDM presents not only excellent compatibility with quantum sensing solutions, but also strong advantages in high imaging speed, high resolution, low phototoxicity, and an enhanced signal-to-background ratio, making it a competent tool for applications in demanding fields such as biomedical science.

DOI
10.1021/acsphotonics.3c01077

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